2532 lines
93 KiB
C
2532 lines
93 KiB
C
/* BFD back-end data structures for ELF files.
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Copyright 1992-2013 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, 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/external.h"
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#include "elf/internal.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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PR 9934: It is possible to have relocations that do not refer to
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symbols, thus it is also possible to have a relocation section in
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an object file, but no symbol table. */
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#define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0)
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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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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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};
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struct elf_link_virtual_table_entry
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{
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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 size;
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bfd_boolean *used;
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/* Virtual table derivation info. */
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struct elf_link_hash_entry *parent;
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};
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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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/* 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 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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unsigned int type : 8;
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/* Symbol st_other value, symbol visibility. */
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unsigned int other : 8;
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/* The symbol's st_target_internal value (see Elf_Internal_Sym). */
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unsigned int target_internal : 8;
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/* Symbol is referenced by a non-shared object (other than the object
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in which it is defined). */
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unsigned int ref_regular : 1;
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/* Symbol is defined by a non-shared object. */
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unsigned int def_regular : 1;
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/* Symbol is referenced by a shared object. */
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unsigned int ref_dynamic : 1;
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/* Symbol is defined by a shared object. */
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unsigned int def_dynamic : 1;
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/* Symbol has a non-weak reference from a non-shared object (other than
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the object in which it is defined). */
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unsigned int ref_regular_nonweak : 1;
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/* Dynamic symbol has been adjustd. */
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unsigned int dynamic_adjusted : 1;
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/* Symbol needs a copy reloc. */
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unsigned int needs_copy : 1;
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/* Symbol needs a procedure linkage table entry. */
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unsigned int needs_plt : 1;
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/* Symbol appears in a non-ELF input file. */
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unsigned int non_elf : 1;
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/* Symbol should be marked as hidden in the version information. */
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unsigned int hidden : 1;
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/* Symbol was forced to local scope due to a version script file. */
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unsigned int forced_local : 1;
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/* Symbol was forced to be dynamic due to a version script file. */
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unsigned int dynamic : 1;
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/* Symbol was marked during garbage collection. */
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unsigned int mark : 1;
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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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unsigned int non_got_ref : 1;
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/* Symbol has a definition in a shared object.
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FIXME: There is no real need for this field if def_dynamic is never
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cleared and all places that test def_dynamic also test def_regular. */
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unsigned int dynamic_def : 1;
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/* Symbol has a non-weak reference from a shared object. */
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unsigned int ref_dynamic_nonweak : 1;
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/* Symbol is referenced with a relocation where C/C++ pointer equality
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matters. */
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unsigned int pointer_equality_needed : 1;
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/* Symbol is a unique global symbol. */
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unsigned int unique_global : 1;
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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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union
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{
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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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/* Hash value of the name computed using the ELF hash function.
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Used part way through size_dynamic_sections, after we've finished
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with weakdefs. */
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unsigned long elf_hash_value;
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} u;
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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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struct elf_link_virtual_table_entry *vtable;
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};
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/* Will references to this symbol always reference the symbol
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in this object? */
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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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/* Common symbols that are turned into definitions don't have the
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DEF_REGULAR flag set, so they might appear to be undefined. */
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#define ELF_COMMON_DEF_P(H) \
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(!(H)->def_regular \
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&& !(H)->def_dynamic \
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&& (H)->root.type == bfd_link_hash_defined)
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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 eh_cie_fde
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{
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union {
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struct {
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/* If REMOVED == 1, this is the CIE that the FDE originally used.
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The CIE belongs to the same .eh_frame input section as the FDE.
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If REMOVED == 0, this is the CIE that we have chosen to use for
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the output FDE. The CIE's REMOVED field is also 0, but the CIE
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might belong to a different .eh_frame input section from the FDE. */
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struct eh_cie_fde *cie_inf;
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struct eh_cie_fde *next_for_section;
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} fde;
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struct {
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/* CIEs have three states:
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- REMOVED && !MERGED: Slated for removal because we haven't yet
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proven that an FDE needs it. FULL_CIE, if nonnull, points to
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more detailed information about the CIE.
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- REMOVED && MERGED: We have merged this CIE with MERGED_WITH,
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which may not belong to the same input section.
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- !REMOVED: We have decided to keep this CIE. SEC is the
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.eh_frame input section that contains the CIE. */
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union {
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struct cie *full_cie;
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struct eh_cie_fde *merged_with;
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asection *sec;
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} u;
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/* The offset of the personality data from the start of the CIE,
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or 0 if the CIE doesn't have any. */
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unsigned int personality_offset : 8;
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/* True if we have marked relocations associated with this CIE. */
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unsigned int gc_mark : 1;
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/* True if we have decided to turn an absolute LSDA encoding into
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a PC-relative one. */
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unsigned int make_lsda_relative : 1;
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/* True if we have decided to turn an absolute personality
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encoding into a PC-relative one. */
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unsigned int make_per_encoding_relative : 1;
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/* True if the CIE contains personality data and if that
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data uses a PC-relative encoding. Always true when
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make_per_encoding_relative is. */
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unsigned int per_encoding_relative : 1;
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/* True if we need to add an 'R' (FDE encoding) entry to the
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CIE's augmentation data. */
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unsigned int add_fde_encoding : 1;
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/* True if we have merged this CIE with another. */
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unsigned int merged : 1;
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/* Unused bits. */
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unsigned int pad1 : 18;
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} cie;
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} u;
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unsigned int reloc_index;
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unsigned int size;
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unsigned int offset;
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unsigned int new_offset;
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unsigned int fde_encoding : 8;
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unsigned int lsda_encoding : 8;
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unsigned int lsda_offset : 8;
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/* True if this entry represents a CIE, false if it represents an FDE. */
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unsigned int cie : 1;
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/* True if this entry is currently marked for removal. */
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unsigned int removed : 1;
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/* True if we need to add a 'z' (augmentation size) entry to the CIE's
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augmentation data, and an associated byte to each of the CIE's FDEs. */
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unsigned int add_augmentation_size : 1;
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/* True if we have decided to convert absolute FDE relocations into
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relative ones. This applies to the first relocation in the FDE,
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which is against the code that the FDE describes. */
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unsigned int make_relative : 1;
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/* Unused bits. */
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unsigned int pad1 : 4;
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unsigned int *set_loc;
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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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struct cie *cies;
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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 htab;
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struct eh_frame_hdr_info
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{
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struct htab *cies;
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asection *hdr_sec;
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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 we should try to merge CIEs between input sections. */
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bfd_boolean merge_cies;
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/* TRUE if all .eh_frames have been parsd. */
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bfd_boolean parsed_eh_frames;
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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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/* Enum used to identify target specific extensions to the elf_obj_tdata
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and elf_link_hash_table structures. Note the enums deliberately start
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from 1 so that we can detect an uninitialized field. The generic value
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is last so that additions to this enum do not need to modify more than
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one line. */
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enum elf_target_id
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{
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AARCH64_ELF_DATA = 1,
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ALPHA_ELF_DATA,
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ARM_ELF_DATA,
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AVR_ELF_DATA,
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BFIN_ELF_DATA,
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CRIS_ELF_DATA,
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FRV_ELF_DATA,
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HPPA32_ELF_DATA,
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HPPA64_ELF_DATA,
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I386_ELF_DATA,
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IA64_ELF_DATA,
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LM32_ELF_DATA,
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M32R_ELF_DATA,
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M68HC11_ELF_DATA,
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||
M68K_ELF_DATA,
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||
METAG_ELF_DATA,
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||
MICROBLAZE_ELF_DATA,
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||
MIPS_ELF_DATA,
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||
MN10300_ELF_DATA,
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||
NIOS2_ELF_DATA,
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||
PPC32_ELF_DATA,
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||
PPC64_ELF_DATA,
|
||
S390_ELF_DATA,
|
||
SH_ELF_DATA,
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||
SPARC_ELF_DATA,
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||
SPU_ELF_DATA,
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||
TIC6X_ELF_DATA,
|
||
X86_64_ELF_DATA,
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||
XTENSA_ELF_DATA,
|
||
XGATE_ELF_DATA,
|
||
TILEGX_ELF_DATA,
|
||
TILEPRO_ELF_DATA,
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||
GENERIC_ELF_DATA
|
||
};
|
||
|
||
/* ELF linker hash table. */
|
||
|
||
struct elf_link_hash_table
|
||
{
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||
struct bfd_link_hash_table root;
|
||
|
||
/* An identifier used to distinguish different target
|
||
specific extensions to this structure. */
|
||
enum elf_target_id hash_table_id;
|
||
|
||
/* Whether we have created the special dynamic sections required
|
||
when linking against or generating a shared object. */
|
||
bfd_boolean dynamic_sections_created;
|
||
|
||
/* True if this target has relocatable executables, so needs dynamic
|
||
section symbols. */
|
||
bfd_boolean is_relocatable_executable;
|
||
|
||
/* The BFD used to hold special sections created by the linker.
|
||
This will be the first BFD found which requires these sections to
|
||
be created. */
|
||
bfd *dynobj;
|
||
|
||
/* The value to use when initialising got.refcount/offset and
|
||
plt.refcount/offset in an elf_link_hash_entry. Set to zero when
|
||
the values are refcounts. Set to init_got_offset/init_plt_offset
|
||
in size_dynamic_sections when the values may be offsets. */
|
||
union gotplt_union init_got_refcount;
|
||
union gotplt_union init_plt_refcount;
|
||
|
||
/* The value to use for got.refcount/offset and plt.refcount/offset
|
||
when the values may be offsets. Normally (bfd_vma) -1. */
|
||
union gotplt_union init_got_offset;
|
||
union gotplt_union init_plt_offset;
|
||
|
||
/* The number of symbols found in the link which must be put into
|
||
the .dynsym section. */
|
||
bfd_size_type dynsymcount;
|
||
|
||
/* The string table of dynamic symbols, which becomes the .dynstr
|
||
section. */
|
||
struct elf_strtab_hash *dynstr;
|
||
|
||
/* The number of buckets in the hash table in the .hash section.
|
||
This is based on the number of dynamic symbols. */
|
||
bfd_size_type bucketcount;
|
||
|
||
/* A linked list of DT_NEEDED names found in dynamic objects
|
||
included in the link. */
|
||
struct bfd_link_needed_list *needed;
|
||
|
||
/* Sections in the output bfd that provides a section symbol
|
||
to be used by relocations emitted against local symbols.
|
||
Most targets will not use data_index_section. */
|
||
asection *text_index_section;
|
||
asection *data_index_section;
|
||
|
||
/* The _GLOBAL_OFFSET_TABLE_ symbol. */
|
||
struct elf_link_hash_entry *hgot;
|
||
|
||
/* The _PROCEDURE_LINKAGE_TABLE_ symbol. */
|
||
struct elf_link_hash_entry *hplt;
|
||
|
||
/* The _DYNAMIC symbol. */
|
||
struct elf_link_hash_entry *hdynamic;
|
||
|
||
/* A pointer to information used to merge SEC_MERGE sections. */
|
||
void *merge_info;
|
||
|
||
/* Used to link stabs in sections. */
|
||
struct stab_info stab_info;
|
||
|
||
/* Used by eh_frame code when editing .eh_frame. */
|
||
struct eh_frame_hdr_info eh_info;
|
||
|
||
/* A linked list of local symbols to be added to .dynsym. */
|
||
struct elf_link_local_dynamic_entry *dynlocal;
|
||
|
||
/* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
|
||
objects included in the link. */
|
||
struct bfd_link_needed_list *runpath;
|
||
|
||
/* Cached first output tls section and size of PT_TLS segment. */
|
||
asection *tls_sec;
|
||
bfd_size_type tls_size;
|
||
|
||
/* A linked list of BFD's loaded in the link. */
|
||
struct elf_link_loaded_list *loaded;
|
||
|
||
/* Short-cuts to get to dynamic linker sections. */
|
||
asection *sgot;
|
||
asection *sgotplt;
|
||
asection *srelgot;
|
||
asection *splt;
|
||
asection *srelplt;
|
||
asection *igotplt;
|
||
asection *iplt;
|
||
asection *irelplt;
|
||
asection *irelifunc;
|
||
};
|
||
|
||
/* Look up an entry in an ELF linker hash table. */
|
||
|
||
#define elf_link_hash_lookup(table, string, create, copy, follow) \
|
||
((struct elf_link_hash_entry *) \
|
||
bfd_link_hash_lookup (&(table)->root, (string), (create), \
|
||
(copy), (follow)))
|
||
|
||
/* Traverse an ELF linker hash table. */
|
||
|
||
#define elf_link_hash_traverse(table, func, info) \
|
||
(bfd_link_hash_traverse \
|
||
(&(table)->root, \
|
||
(bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
|
||
(info)))
|
||
|
||
/* Get the ELF linker hash table from a link_info structure. */
|
||
|
||
#define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
|
||
|
||
#define elf_hash_table_id(table) ((table) -> hash_table_id)
|
||
|
||
/* Returns TRUE if the hash table is a struct elf_link_hash_table. */
|
||
#define is_elf_hash_table(htab) \
|
||
(((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
|
||
|
||
/* Used by bfd_sym_from_r_symndx to cache a small number of local
|
||
symbols. */
|
||
#define LOCAL_SYM_CACHE_SIZE 32
|
||
struct sym_cache
|
||
{
|
||
bfd *abfd;
|
||
unsigned long indx[LOCAL_SYM_CACHE_SIZE];
|
||
Elf_Internal_Sym sym[LOCAL_SYM_CACHE_SIZE];
|
||
};
|
||
|
||
/* Constant information held for an ELF backend. */
|
||
|
||
struct elf_size_info {
|
||
unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr;
|
||
unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note;
|
||
|
||
/* The size of entries in the .hash section. */
|
||
unsigned char sizeof_hash_entry;
|
||
|
||
/* The number of internal relocations to allocate per external
|
||
relocation entry. */
|
||
unsigned char int_rels_per_ext_rel;
|
||
/* We use some fixed size arrays. This should be large enough to
|
||
handle all back-ends. */
|
||
#define MAX_INT_RELS_PER_EXT_REL 3
|
||
|
||
unsigned char arch_size, log_file_align;
|
||
unsigned char elfclass, ev_current;
|
||
int (*write_out_phdrs)
|
||
(bfd *, const Elf_Internal_Phdr *, unsigned int);
|
||
bfd_boolean
|
||
(*write_shdrs_and_ehdr) (bfd *);
|
||
bfd_boolean (*checksum_contents)
|
||
(bfd * , void (*) (const void *, size_t, void *), void *);
|
||
void (*write_relocs)
|
||
(bfd *, asection *, void *);
|
||
bfd_boolean (*swap_symbol_in)
|
||
(bfd *, const void *, const void *, Elf_Internal_Sym *);
|
||
void (*swap_symbol_out)
|
||
(bfd *, const Elf_Internal_Sym *, void *, void *);
|
||
bfd_boolean (*slurp_reloc_table)
|
||
(bfd *, asection *, asymbol **, bfd_boolean);
|
||
long (*slurp_symbol_table)
|
||
(bfd *, asymbol **, bfd_boolean);
|
||
void (*swap_dyn_in)
|
||
(bfd *, const void *, Elf_Internal_Dyn *);
|
||
void (*swap_dyn_out)
|
||
(bfd *, const Elf_Internal_Dyn *, void *);
|
||
|
||
/* This function is called to swap in a REL relocation. If an
|
||
external relocation corresponds to more than one internal
|
||
relocation, then all relocations are swapped in at once. */
|
||
void (*swap_reloc_in)
|
||
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
|
||
|
||
/* This function is called to swap out a REL relocation. */
|
||
void (*swap_reloc_out)
|
||
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
|
||
/* This function is called to swap in a RELA relocation. If an
|
||
external relocation corresponds to more than one internal
|
||
relocation, then all relocations are swapped in at once. */
|
||
void (*swap_reloca_in)
|
||
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
|
||
|
||
/* This function is called to swap out a RELA relocation. */
|
||
void (*swap_reloca_out)
|
||
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
};
|
||
|
||
#define elf_symbol_from(ABFD,S) \
|
||
(((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
|
||
&& (S)->the_bfd->tdata.elf_obj_data != 0) \
|
||
? (elf_symbol_type *) (S) \
|
||
: 0)
|
||
|
||
enum elf_reloc_type_class {
|
||
reloc_class_normal,
|
||
reloc_class_relative,
|
||
reloc_class_plt,
|
||
reloc_class_copy,
|
||
reloc_class_ifunc
|
||
};
|
||
|
||
struct elf_reloc_cookie
|
||
{
|
||
Elf_Internal_Rela *rels, *rel, *relend;
|
||
Elf_Internal_Sym *locsyms;
|
||
bfd *abfd;
|
||
size_t locsymcount;
|
||
size_t extsymoff;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
int r_sym_shift;
|
||
bfd_boolean bad_symtab;
|
||
};
|
||
|
||
/* The level of IRIX compatibility we're striving for. */
|
||
|
||
typedef enum {
|
||
ict_none,
|
||
ict_irix5,
|
||
ict_irix6
|
||
} irix_compat_t;
|
||
|
||
/* Mapping of ELF section names and types. */
|
||
struct bfd_elf_special_section
|
||
{
|
||
const char *prefix;
|
||
int prefix_length;
|
||
/* 0 means name must match PREFIX exactly.
|
||
-1 means name must start with PREFIX followed by an arbitrary string.
|
||
-2 means name must match PREFIX exactly or consist of PREFIX followed
|
||
by a dot then anything.
|
||
> 0 means name must start with the first PREFIX_LENGTH chars of
|
||
PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */
|
||
int suffix_length;
|
||
int type;
|
||
bfd_vma attr;
|
||
};
|
||
|
||
enum action_discarded
|
||
{
|
||
COMPLAIN = 1,
|
||
PRETEND = 2
|
||
};
|
||
|
||
typedef asection * (*elf_gc_mark_hook_fn)
|
||
(asection *, struct bfd_link_info *, Elf_Internal_Rela *,
|
||
struct elf_link_hash_entry *, Elf_Internal_Sym *);
|
||
|
||
struct elf_backend_data
|
||
{
|
||
/* The architecture for this backend. */
|
||
enum bfd_architecture arch;
|
||
|
||
/* An identifier used to distinguish different target specific
|
||
extensions to elf_obj_tdata and elf_link_hash_table structures. */
|
||
enum elf_target_id target_id;
|
||
|
||
/* The ELF machine code (EM_xxxx) for this backend. */
|
||
int elf_machine_code;
|
||
|
||
/* EI_OSABI. */
|
||
int elf_osabi;
|
||
|
||
/* The maximum page size for this backend. */
|
||
bfd_vma maxpagesize;
|
||
|
||
/* The minimum page size for this backend. An input object will not be
|
||
considered page aligned unless its sections are correctly aligned for
|
||
pages at least this large. May be smaller than maxpagesize. */
|
||
bfd_vma minpagesize;
|
||
|
||
/* The common page size for this backend. */
|
||
bfd_vma commonpagesize;
|
||
|
||
/* The BFD flags applied to sections created for dynamic linking. */
|
||
flagword dynamic_sec_flags;
|
||
|
||
/* Architecture-specific data for this backend.
|
||
This is actually a pointer to some type like struct elf_ARCH_data. */
|
||
const void *arch_data;
|
||
|
||
/* A function to translate an ELF RELA relocation to a BFD arelent
|
||
structure. */
|
||
void (*elf_info_to_howto)
|
||
(bfd *, arelent *, Elf_Internal_Rela *);
|
||
|
||
/* A function to translate an ELF REL relocation to a BFD arelent
|
||
structure. */
|
||
void (*elf_info_to_howto_rel)
|
||
(bfd *, arelent *, Elf_Internal_Rela *);
|
||
|
||
/* A function to determine whether a symbol is global when
|
||
partitioning the symbol table into local and global symbols.
|
||
This should be NULL for most targets, in which case the correct
|
||
thing will be done. MIPS ELF, at least on the Irix 5, has
|
||
special requirements. */
|
||
bfd_boolean (*elf_backend_sym_is_global)
|
||
(bfd *, asymbol *);
|
||
|
||
/* The remaining functions are hooks which are called only if they
|
||
are not NULL. */
|
||
|
||
/* A function to permit a backend specific check on whether a
|
||
particular BFD format is relevant for an object file, and to
|
||
permit the backend to set any global information it wishes. When
|
||
this is called elf_elfheader is set, but anything else should be
|
||
used with caution. If this returns FALSE, the check_format
|
||
routine will return a bfd_error_wrong_format error. */
|
||
bfd_boolean (*elf_backend_object_p)
|
||
(bfd *);
|
||
|
||
/* A function to do additional symbol processing when reading the
|
||
ELF symbol table. This is where any processor-specific special
|
||
section indices are handled. */
|
||
void (*elf_backend_symbol_processing)
|
||
(bfd *, asymbol *);
|
||
|
||
/* A function to do additional symbol processing after reading the
|
||
entire ELF symbol table. */
|
||
bfd_boolean (*elf_backend_symbol_table_processing)
|
||
(bfd *, elf_symbol_type *, unsigned int);
|
||
|
||
/* A function to set the type of the info field. Processor-specific
|
||
types should be handled here. */
|
||
int (*elf_backend_get_symbol_type)
|
||
(Elf_Internal_Sym *, int);
|
||
|
||
/* A function to return the linker hash table entry of a symbol that
|
||
might be satisfied by an archive symbol. */
|
||
struct elf_link_hash_entry * (*elf_backend_archive_symbol_lookup)
|
||
(bfd *, struct bfd_link_info *, const char *);
|
||
|
||
/* Return true if local section symbols should have a non-null st_name.
|
||
NULL implies false. */
|
||
bfd_boolean (*elf_backend_name_local_section_symbols)
|
||
(bfd *);
|
||
|
||
/* A function to do additional processing on the ELF section header
|
||
just before writing it out. This is used to set the flags and
|
||
type fields for some sections, or to actually write out data for
|
||
unusual sections. */
|
||
bfd_boolean (*elf_backend_section_processing)
|
||
(bfd *, Elf_Internal_Shdr *);
|
||
|
||
/* A function to handle unusual section types when creating BFD
|
||
sections from ELF sections. */
|
||
bfd_boolean (*elf_backend_section_from_shdr)
|
||
(bfd *, Elf_Internal_Shdr *, const char *, int);
|
||
|
||
/* A function to convert machine dependent ELF section header flags to
|
||
BFD internal section header flags. */
|
||
bfd_boolean (*elf_backend_section_flags)
|
||
(flagword *, const Elf_Internal_Shdr *);
|
||
|
||
/* A function that returns a struct containing ELF section flags and
|
||
type for the given BFD section. */
|
||
const struct bfd_elf_special_section * (*get_sec_type_attr)
|
||
(bfd *, asection *);
|
||
|
||
/* A function to handle unusual program segment types when creating BFD
|
||
sections from ELF program segments. */
|
||
bfd_boolean (*elf_backend_section_from_phdr)
|
||
(bfd *, Elf_Internal_Phdr *, int, const char *);
|
||
|
||
/* A function to set up the ELF section header for a BFD section in
|
||
preparation for writing it out. This is where the flags and type
|
||
fields are set for unusual sections. */
|
||
bfd_boolean (*elf_backend_fake_sections)
|
||
(bfd *, Elf_Internal_Shdr *, asection *);
|
||
|
||
/* A function to get the ELF section index for a BFD section. If
|
||
this returns TRUE, the section was found. If it is a normal ELF
|
||
section, *RETVAL should be left unchanged. If it is not a normal
|
||
ELF section *RETVAL should be set to the SHN_xxxx index. */
|
||
bfd_boolean (*elf_backend_section_from_bfd_section)
|
||
(bfd *, asection *, int *retval);
|
||
|
||
/* If this field is not NULL, it is called by the add_symbols phase
|
||
of a link just before adding a symbol to the global linker hash
|
||
table. It may modify any of the fields as it wishes. If *NAME
|
||
is set to NULL, the symbol will be skipped rather than being
|
||
added to the hash table. This function is responsible for
|
||
handling all processor dependent symbol bindings and section
|
||
indices, and must set at least *FLAGS and *SEC for each processor
|
||
dependent case; failure to do so will cause a link error. */
|
||
bfd_boolean (*elf_add_symbol_hook)
|
||
(bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *,
|
||
const char **name, flagword *flags, asection **sec, bfd_vma *value);
|
||
|
||
/* If this field is not NULL, it is called by the elf_link_output_sym
|
||
phase of a link for each symbol which will appear in the object file.
|
||
On error, this function returns 0. 1 is returned when the symbol
|
||
should be output, 2 is returned when the symbol should be discarded. */
|
||
int (*elf_backend_link_output_symbol_hook)
|
||
(struct bfd_link_info *info, const char *, Elf_Internal_Sym *,
|
||
asection *, struct elf_link_hash_entry *);
|
||
|
||
/* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
|
||
linker the first time it encounters a dynamic object in the link.
|
||
This function must create any sections required for dynamic
|
||
linking. The ABFD argument is a dynamic object. The .interp,
|
||
.dynamic, .dynsym, .dynstr, and .hash functions have already been
|
||
created, and this function may modify the section flags if
|
||
desired. This function will normally create the .got and .plt
|
||
sections, but different backends have different requirements. */
|
||
bfd_boolean (*elf_backend_create_dynamic_sections)
|
||
(bfd *abfd, struct bfd_link_info *info);
|
||
|
||
/* When creating a shared library, determine whether to omit the
|
||
dynamic symbol for the section. */
|
||
bfd_boolean (*elf_backend_omit_section_dynsym)
|
||
(bfd *output_bfd, struct bfd_link_info *info, asection *osec);
|
||
|
||
/* Return TRUE if relocations of targets are compatible to the extent
|
||
that CHECK_RELOCS will properly process them. PR 4424. */
|
||
bfd_boolean (*relocs_compatible) (const bfd_target *, const bfd_target *);
|
||
|
||
/* The CHECK_RELOCS function is called by the add_symbols phase of
|
||
the ELF backend linker. It is called once for each section with
|
||
relocs of an object file, just after the symbols for the object
|
||
file have been added to the global linker hash table. The
|
||
function must look through the relocs and do any special handling
|
||
required. This generally means allocating space in the global
|
||
offset table, and perhaps allocating space for a reloc. The
|
||
relocs are always passed as Rela structures; if the section
|
||
actually uses Rel structures, the r_addend field will always be
|
||
zero. */
|
||
bfd_boolean (*check_relocs)
|
||
(bfd *abfd, struct bfd_link_info *info, asection *o,
|
||
const Elf_Internal_Rela *relocs);
|
||
|
||
/* The CHECK_DIRECTIVES function is called once per input file by
|
||
the add_symbols phase of the ELF backend linker. The function
|
||
must inspect the bfd and create any additional symbols according
|
||
to any custom directives in the bfd. */
|
||
bfd_boolean (*check_directives)
|
||
(bfd *abfd, struct bfd_link_info *info);
|
||
|
||
/* The AS_NEEDED_CLEANUP function is called once per --as-needed
|
||
input file that was not needed by the add_symbols phase of the
|
||
ELF backend linker. The function must undo any target specific
|
||
changes in the symbol hash table. */
|
||
bfd_boolean (*as_needed_cleanup)
|
||
(bfd *abfd, struct bfd_link_info *info);
|
||
|
||
/* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
|
||
linker for every symbol which is defined by a dynamic object and
|
||
referenced by a regular object. This is called after all the
|
||
input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
|
||
function has been called. The hash table entry should be
|
||
bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
|
||
defined in a section from a dynamic object. Dynamic object
|
||
sections are not included in the final link, and this function is
|
||
responsible for changing the value to something which the rest of
|
||
the link can deal with. This will normally involve adding an
|
||
entry to the .plt or .got or some such section, and setting the
|
||
symbol to point to that. */
|
||
bfd_boolean (*elf_backend_adjust_dynamic_symbol)
|
||
(struct bfd_link_info *info, struct elf_link_hash_entry *h);
|
||
|
||
/* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
|
||
after all the linker input files have been seen but before the
|
||
section sizes have been set. This is called after
|
||
ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */
|
||
bfd_boolean (*elf_backend_always_size_sections)
|
||
(bfd *output_bfd, struct bfd_link_info *info);
|
||
|
||
/* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
|
||
linker after all the linker input files have been seen but before
|
||
the sections sizes have been set. This is called after
|
||
ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
|
||
It is only called when linking against a dynamic object. It must
|
||
set the sizes of the dynamic sections, and may fill in their
|
||
contents as well. The generic ELF linker can handle the .dynsym,
|
||
.dynstr and .hash sections. This function must handle the
|
||
.interp section and any sections created by the
|
||
CREATE_DYNAMIC_SECTIONS entry point. */
|
||
bfd_boolean (*elf_backend_size_dynamic_sections)
|
||
(bfd *output_bfd, struct bfd_link_info *info);
|
||
|
||
/* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections
|
||
we keep to use as a base for relocs and symbols. */
|
||
void (*elf_backend_init_index_section)
|
||
(bfd *output_bfd, struct bfd_link_info *info);
|
||
|
||
/* The RELOCATE_SECTION function is called by the ELF backend linker
|
||
to handle the relocations for a section.
|
||
|
||
The relocs are always passed as Rela structures; if the section
|
||
actually uses Rel structures, the r_addend field will always be
|
||
zero.
|
||
|
||
This function is responsible for adjust the section contents as
|
||
necessary, and (if using Rela relocs and generating a
|
||
relocatable output file) adjusting the reloc addend as
|
||
necessary.
|
||
|
||
This function does not have to worry about setting the reloc
|
||
address or the reloc symbol index.
|
||
|
||
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
||
|
||
LOCAL_SECTIONS is an array giving the section in the input file
|
||
corresponding to the st_shndx field of each local symbol.
|
||
|
||
The global hash table entry for the global symbols can be found
|
||
via elf_sym_hashes (input_bfd).
|
||
|
||
When generating relocatable output, this function must handle
|
||
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
||
going to be the section symbol corresponding to the output
|
||
section, which means that the addend must be adjusted
|
||
accordingly.
|
||
|
||
Returns FALSE on error, TRUE on success, 2 if successful and
|
||
relocations should be written for this section. */
|
||
int (*elf_backend_relocate_section)
|
||
(bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd,
|
||
asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs,
|
||
Elf_Internal_Sym *local_syms, asection **local_sections);
|
||
|
||
/* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
|
||
linker just before it writes a symbol out to the .dynsym section.
|
||
The processor backend may make any required adjustment to the
|
||
symbol. It may also take the opportunity to set contents of the
|
||
dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
|
||
all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
|
||
on those symbols which are defined by a dynamic object. */
|
||
bfd_boolean (*elf_backend_finish_dynamic_symbol)
|
||
(bfd *output_bfd, struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h, Elf_Internal_Sym *sym);
|
||
|
||
/* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
|
||
linker just before it writes all the dynamic sections out to the
|
||
output file. The FINISH_DYNAMIC_SYMBOL will have been called on
|
||
all dynamic symbols. */
|
||
bfd_boolean (*elf_backend_finish_dynamic_sections)
|
||
(bfd *output_bfd, struct bfd_link_info *info);
|
||
|
||
/* A function to do any beginning processing needed for the ELF file
|
||
before building the ELF headers and computing file positions. */
|
||
void (*elf_backend_begin_write_processing)
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
/* A function to do any final processing needed for the ELF file
|
||
before writing it out. The LINKER argument is TRUE if this BFD
|
||
was created by the ELF backend linker. */
|
||
void (*elf_backend_final_write_processing)
|
||
(bfd *, bfd_boolean linker);
|
||
|
||
/* This function is called by get_program_header_size. It should
|
||
return the number of additional program segments which this BFD
|
||
will need. It should return -1 on error. */
|
||
int (*elf_backend_additional_program_headers)
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
/* This function is called to modify an existing segment map in a
|
||
backend specific fashion. */
|
||
bfd_boolean (*elf_backend_modify_segment_map)
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
/* This function is called to modify program headers just before
|
||
they are written. */
|
||
bfd_boolean (*elf_backend_modify_program_headers)
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
/* This function is called before section garbage collection to
|
||
mark entry symbol sections. */
|
||
void (*gc_keep)
|
||
(struct bfd_link_info *);
|
||
|
||
/* This function is called during section garbage collection to
|
||
mark sections that define global symbols. */
|
||
bfd_boolean (*gc_mark_dynamic_ref)
|
||
(struct elf_link_hash_entry *, void *);
|
||
|
||
/* This function is called during section gc to discover the section a
|
||
particular relocation refers to. */
|
||
elf_gc_mark_hook_fn gc_mark_hook;
|
||
|
||
/* This function, if defined, is called after the first gc marking pass
|
||
to allow the backend to mark additional sections. */
|
||
bfd_boolean (*gc_mark_extra_sections)
|
||
(struct bfd_link_info *, elf_gc_mark_hook_fn);
|
||
|
||
/* This function, if defined, is called during the sweep phase of gc
|
||
in order that a backend might update any data structures it might
|
||
be maintaining. */
|
||
bfd_boolean (*gc_sweep_hook)
|
||
(bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
|
||
|
||
/* This function, if defined, is called after the ELF headers have
|
||
been created. This allows for things like the OS and ABI versions
|
||
to be changed. */
|
||
void (*elf_backend_post_process_headers)
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
/* This function, if defined, prints a symbol to file and returns the
|
||
name of the symbol to be printed. It should return NULL to fall
|
||
back to default symbol printing. */
|
||
const char *(*elf_backend_print_symbol_all)
|
||
(bfd *, void *, asymbol *);
|
||
|
||
/* This function, if defined, is called after all local symbols and
|
||
global symbols converted to locals are emitted into the symtab
|
||
section. It allows the backend to emit special local symbols
|
||
not handled in the hash table. */
|
||
bfd_boolean (*elf_backend_output_arch_local_syms)
|
||
(bfd *, struct bfd_link_info *, void *,
|
||
bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *,
|
||
struct elf_link_hash_entry *));
|
||
|
||
/* This function, if defined, is called after all symbols are emitted
|
||
into the symtab section. It allows the backend to emit special
|
||
global symbols not handled in the hash table. */
|
||
bfd_boolean (*elf_backend_output_arch_syms)
|
||
(bfd *, struct bfd_link_info *, void *,
|
||
bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *,
|
||
struct elf_link_hash_entry *));
|
||
|
||
/* Copy any information related to dynamic linking from a pre-existing
|
||
symbol to a newly created symbol. Also called to copy flags and
|
||
other back-end info to a weakdef, in which case the symbol is not
|
||
newly created and plt/got refcounts and dynamic indices should not
|
||
be copied. */
|
||
void (*elf_backend_copy_indirect_symbol)
|
||
(struct bfd_link_info *, struct elf_link_hash_entry *,
|
||
struct elf_link_hash_entry *);
|
||
|
||
/* Modify any information related to dynamic linking such that the
|
||
symbol is not exported. */
|
||
void (*elf_backend_hide_symbol)
|
||
(struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean);
|
||
|
||
/* A function to do additional symbol fixup, called by
|
||
_bfd_elf_fix_symbol_flags. */
|
||
bfd_boolean (*elf_backend_fixup_symbol)
|
||
(struct bfd_link_info *, struct elf_link_hash_entry *);
|
||
|
||
/* Merge the backend specific symbol attribute. */
|
||
void (*elf_backend_merge_symbol_attribute)
|
||
(struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean,
|
||
bfd_boolean);
|
||
|
||
/* This function, if defined, will return a string containing the
|
||
name of a target-specific dynamic tag. */
|
||
char *(*elf_backend_get_target_dtag)
|
||
(bfd_vma);
|
||
|
||
/* Decide whether an undefined symbol is special and can be ignored.
|
||
This is the case for OPTIONAL symbols on IRIX. */
|
||
bfd_boolean (*elf_backend_ignore_undef_symbol)
|
||
(struct elf_link_hash_entry *);
|
||
|
||
/* Emit relocations. Overrides default routine for emitting relocs,
|
||
except during a relocatable link, or if all relocs are being emitted. */
|
||
bfd_boolean (*elf_backend_emit_relocs)
|
||
(bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
|
||
struct elf_link_hash_entry **);
|
||
|
||
/* Count relocations. Not called for relocatable links
|
||
or if all relocs are being preserved in the output. */
|
||
unsigned int (*elf_backend_count_relocs)
|
||
(struct bfd_link_info *, asection *);
|
||
|
||
/* This function, if defined, is called when an NT_PRSTATUS note is found
|
||
in a core file. */
|
||
bfd_boolean (*elf_backend_grok_prstatus)
|
||
(bfd *, Elf_Internal_Note *);
|
||
|
||
/* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
|
||
note is found in a core file. */
|
||
bfd_boolean (*elf_backend_grok_psinfo)
|
||
(bfd *, Elf_Internal_Note *);
|
||
|
||
/* This function, if defined, is called to write a note to a corefile. */
|
||
char *(*elf_backend_write_core_note)
|
||
(bfd *abfd, char *buf, int *bufsiz, int note_type, ...);
|
||
|
||
/* This function, if defined, is called to convert target-specific
|
||
section flag names into hex values. */
|
||
flagword (*elf_backend_lookup_section_flags_hook)
|
||
(char *);
|
||
|
||
/* This function returns class of a reloc type. */
|
||
enum elf_reloc_type_class (*elf_backend_reloc_type_class)
|
||
(const struct bfd_link_info *, const asection *, const Elf_Internal_Rela *);
|
||
|
||
/* This function, if defined, removes information about discarded functions
|
||
from other sections which mention them. */
|
||
bfd_boolean (*elf_backend_discard_info)
|
||
(bfd *, struct elf_reloc_cookie *, struct bfd_link_info *);
|
||
|
||
/* This function, if defined, signals that the function above has removed
|
||
the discarded relocations for this section. */
|
||
bfd_boolean (*elf_backend_ignore_discarded_relocs)
|
||
(asection *);
|
||
|
||
/* What to do when ld finds relocations against symbols defined in
|
||
discarded sections. */
|
||
unsigned int (*action_discarded)
|
||
(asection *);
|
||
|
||
/* This function returns the width of FDE pointers in bytes, or 0 if
|
||
that can't be determined for some reason. The default definition
|
||
goes by the bfd's EI_CLASS. */
|
||
unsigned int (*elf_backend_eh_frame_address_size)
|
||
(bfd *, asection *);
|
||
|
||
/* These functions tell elf-eh-frame whether to attempt to turn
|
||
absolute or lsda encodings into pc-relative ones. The default
|
||
definition enables these transformations. */
|
||
bfd_boolean (*elf_backend_can_make_relative_eh_frame)
|
||
(bfd *, struct bfd_link_info *, asection *);
|
||
bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame)
|
||
(bfd *, struct bfd_link_info *, asection *);
|
||
|
||
/* This function returns an encoding after computing the encoded
|
||
value (and storing it in ENCODED) for the given OFFSET into OSEC,
|
||
to be stored in at LOC_OFFSET into the LOC_SEC input section.
|
||
The default definition chooses a 32-bit PC-relative encoding. */
|
||
bfd_byte (*elf_backend_encode_eh_address)
|
||
(bfd *abfd, struct bfd_link_info *info,
|
||
asection *osec, bfd_vma offset,
|
||
asection *loc_sec, bfd_vma loc_offset,
|
||
bfd_vma *encoded);
|
||
|
||
/* This function, if defined, may write out the given section.
|
||
Returns TRUE if it did so and FALSE if the caller should. */
|
||
bfd_boolean (*elf_backend_write_section)
|
||
(bfd *, struct bfd_link_info *, asection *, bfd_byte *);
|
||
|
||
/* The level of IRIX compatibility we're striving for.
|
||
MIPS ELF specific function. */
|
||
irix_compat_t (*elf_backend_mips_irix_compat)
|
||
(bfd *);
|
||
|
||
reloc_howto_type *(*elf_backend_mips_rtype_to_howto)
|
||
(unsigned int, bfd_boolean);
|
||
|
||
/* The swapping table to use when dealing with ECOFF information.
|
||
Used for the MIPS ELF .mdebug section. */
|
||
const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
|
||
|
||
/* This function implements `bfd_elf_bfd_from_remote_memory';
|
||
see elf.c, elfcode.h. */
|
||
bfd *(*elf_backend_bfd_from_remote_memory)
|
||
(bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
|
||
int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr,
|
||
bfd_size_type len));
|
||
|
||
/* This function is used by `_bfd_elf_get_synthetic_symtab';
|
||
see elf.c. */
|
||
bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *);
|
||
|
||
/* Is symbol defined in common section? */
|
||
bfd_boolean (*common_definition) (Elf_Internal_Sym *);
|
||
|
||
/* Return a common section index for section. */
|
||
unsigned int (*common_section_index) (asection *);
|
||
|
||
/* Return a common section for section. */
|
||
asection *(*common_section) (asection *);
|
||
|
||
/* Return TRUE if we can merge 2 definitions. */
|
||
bfd_boolean (*merge_symbol) (struct elf_link_hash_entry *,
|
||
const Elf_Internal_Sym *, asection **,
|
||
bfd_boolean, bfd_boolean,
|
||
bfd *, const asection *);
|
||
|
||
/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
|
||
bfd_boolean (*elf_hash_symbol) (struct elf_link_hash_entry *);
|
||
|
||
/* Return TRUE if type is a function symbol type. */
|
||
bfd_boolean (*is_function_type) (unsigned int type);
|
||
|
||
/* If the ELF symbol SYM might be a function in SEC, return the
|
||
function size and set *CODE_OFF to the function's entry point,
|
||
otherwise return zero. */
|
||
bfd_size_type (*maybe_function_sym) (const asymbol *sym, asection *sec,
|
||
bfd_vma *code_off);
|
||
|
||
/* Used to handle bad SHF_LINK_ORDER input. */
|
||
bfd_error_handler_type link_order_error_handler;
|
||
|
||
/* Name of the PLT relocation section. */
|
||
const char *relplt_name;
|
||
|
||
/* Alternate EM_xxxx machine codes for this backend. */
|
||
int elf_machine_alt1;
|
||
int elf_machine_alt2;
|
||
|
||
const struct elf_size_info *s;
|
||
|
||
/* An array of target specific special sections. */
|
||
const struct bfd_elf_special_section *special_sections;
|
||
|
||
/* The size in bytes of the header for the GOT. This includes the
|
||
so-called reserved entries on some systems. */
|
||
bfd_vma got_header_size;
|
||
|
||
/* The size of the GOT entry for the symbol pointed to by H if non-NULL,
|
||
otherwise by the local symbol with index SYMNDX in IBFD. */
|
||
bfd_vma (*got_elt_size) (bfd *, struct bfd_link_info *,
|
||
struct elf_link_hash_entry *h,
|
||
bfd *ibfd, unsigned long symndx);
|
||
|
||
/* The vendor name to use for a processor-standard attributes section. */
|
||
const char *obj_attrs_vendor;
|
||
|
||
/* The section name to use for a processor-standard attributes section. */
|
||
const char *obj_attrs_section;
|
||
|
||
/* Return 1, 2 or 3 to indicate what type of arguments a
|
||
processor-specific tag takes. */
|
||
int (*obj_attrs_arg_type) (int);
|
||
|
||
/* The section type to use for an attributes section. */
|
||
unsigned int obj_attrs_section_type;
|
||
|
||
/* This function determines the order in which any attributes are
|
||
written. It must be defined for input in the range
|
||
LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range
|
||
is used in order to make unity easy). The returned value is the
|
||
actual tag number to place in the input position. */
|
||
int (*obj_attrs_order) (int);
|
||
|
||
/* Handle merging unknown attributes; either warn and return TRUE,
|
||
or give an error and return FALSE. */
|
||
bfd_boolean (*obj_attrs_handle_unknown) (bfd *, int);
|
||
|
||
/* This is non-zero if static TLS segments require a special alignment. */
|
||
unsigned static_tls_alignment;
|
||
|
||
/* Alignment for the PT_GNU_STACK segment. */
|
||
unsigned stack_align;
|
||
|
||
/* This is TRUE if the linker should act like collect and gather
|
||
global constructors and destructors by name. This is TRUE for
|
||
MIPS ELF because the Irix 5 tools can not handle the .init
|
||
section. */
|
||
unsigned collect : 1;
|
||
|
||
/* This is TRUE if the linker should ignore changes to the type of a
|
||
symbol. This is TRUE for MIPS ELF because some Irix 5 objects
|
||
record undefined functions as STT_OBJECT although the definitions
|
||
are STT_FUNC. */
|
||
unsigned type_change_ok : 1;
|
||
|
||
/* Whether the backend may use REL relocations. (Some backends use
|
||
both REL and RELA relocations, and this flag is set for those
|
||
backends.) */
|
||
unsigned may_use_rel_p : 1;
|
||
|
||
/* Whether the backend may use RELA relocations. (Some backends use
|
||
both REL and RELA relocations, and this flag is set for those
|
||
backends.) */
|
||
unsigned may_use_rela_p : 1;
|
||
|
||
/* Whether the default relocation type is RELA. If a backend with
|
||
this flag set wants REL relocations for a particular section,
|
||
it must note that explicitly. Similarly, if this flag is clear,
|
||
and the backend wants RELA relocations for a particular
|
||
section. */
|
||
unsigned default_use_rela_p : 1;
|
||
|
||
/* True if PLT and copy relocations should be RELA by default. */
|
||
unsigned rela_plts_and_copies_p : 1;
|
||
|
||
/* Set if RELA relocations for a relocatable link can be handled by
|
||
generic code. Backends that set this flag need do nothing in the
|
||
backend relocate_section routine for relocatable linking. */
|
||
unsigned rela_normal : 1;
|
||
|
||
/* TRUE if addresses "naturally" sign extend. This is used when
|
||
swapping in from Elf32 when BFD64. */
|
||
unsigned sign_extend_vma : 1;
|
||
|
||
unsigned want_got_plt : 1;
|
||
unsigned plt_readonly : 1;
|
||
unsigned want_plt_sym : 1;
|
||
unsigned plt_not_loaded : 1;
|
||
unsigned plt_alignment : 4;
|
||
unsigned can_gc_sections : 1;
|
||
unsigned can_refcount : 1;
|
||
unsigned want_got_sym : 1;
|
||
unsigned want_dynbss : 1;
|
||
|
||
/* Targets which do not support physical addressing often require
|
||
that the p_paddr field in the section header to be set to zero.
|
||
This field indicates whether this behavior is required. */
|
||
unsigned want_p_paddr_set_to_zero : 1;
|
||
|
||
/* True if an object file lacking a .note.GNU-stack section
|
||
should be assumed to be requesting exec stack. At least one
|
||
other file in the link needs to have a .note.GNU-stack section
|
||
for a PT_GNU_STACK segment to be created. */
|
||
unsigned default_execstack : 1;
|
||
};
|
||
|
||
/* Information about reloc sections associated with a bfd_elf_section_data
|
||
structure. */
|
||
struct bfd_elf_section_reloc_data
|
||
{
|
||
/* The ELF header for the reloc section associated with this
|
||
section, if any. */
|
||
Elf_Internal_Shdr *hdr;
|
||
/* The number of relocations currently assigned to HDR. */
|
||
unsigned int count;
|
||
/* The ELF section number of the reloc section. Only used for an
|
||
output file. */
|
||
int idx;
|
||
/* Used by the backend linker to store the symbol hash table entries
|
||
associated with relocs against global symbols. */
|
||
struct elf_link_hash_entry **hashes;
|
||
};
|
||
|
||
/* Information stored for each BFD section in an ELF file. This
|
||
structure is allocated by elf_new_section_hook. */
|
||
|
||
struct bfd_elf_section_data
|
||
{
|
||
/* The ELF header for this section. */
|
||
Elf_Internal_Shdr this_hdr;
|
||
|
||
/* INPUT_SECTION_FLAGS if specified in the linker script. */
|
||
struct flag_info *section_flag_info;
|
||
|
||
/* Information about the REL and RELA reloc sections associated
|
||
with this section, if any. */
|
||
struct bfd_elf_section_reloc_data rel, rela;
|
||
|
||
/* The ELF section number of this section. */
|
||
int this_idx;
|
||
|
||
/* Used by the backend linker when generating a shared library to
|
||
record the dynamic symbol index for a section symbol
|
||
corresponding to this section. A value of 0 means that there is
|
||
no dynamic symbol for this section. */
|
||
int dynindx;
|
||
|
||
/* A pointer to the linked-to section for SHF_LINK_ORDER. */
|
||
asection *linked_to;
|
||
|
||
/* A pointer to the swapped relocs. If the section uses REL relocs,
|
||
rather than RELA, all the r_addend fields will be zero. This
|
||
pointer may be NULL. It is used by the backend linker. */
|
||
Elf_Internal_Rela *relocs;
|
||
|
||
/* A pointer to a linked list tracking dynamic relocs copied for
|
||
local symbols. */
|
||
void *local_dynrel;
|
||
|
||
/* A pointer to the bfd section used for dynamic relocs. */
|
||
asection *sreloc;
|
||
|
||
union {
|
||
/* Group name, if this section is a member of a group. */
|
||
const char *name;
|
||
|
||
/* Group signature sym, if this is the SHT_GROUP section. */
|
||
struct bfd_symbol *id;
|
||
} group;
|
||
|
||
/* For a member of a group, points to the SHT_GROUP section.
|
||
NULL for the SHT_GROUP section itself and non-group sections. */
|
||
asection *sec_group;
|
||
|
||
/* A linked list of member sections in the group. Circular when used by
|
||
the linker. For the SHT_GROUP section, points at first member. */
|
||
asection *next_in_group;
|
||
|
||
/* The FDEs associated with this section. The u.fde.next_in_section
|
||
field acts as a chain pointer. */
|
||
struct eh_cie_fde *fde_list;
|
||
|
||
/* A pointer used for various section optimizations. */
|
||
void *sec_info;
|
||
};
|
||
|
||
#define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd)
|
||
#define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to)
|
||
#define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type)
|
||
#define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags)
|
||
#define elf_group_name(sec) (elf_section_data(sec)->group.name)
|
||
#define elf_group_id(sec) (elf_section_data(sec)->group.id)
|
||
#define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
|
||
#define elf_fde_list(sec) (elf_section_data(sec)->fde_list)
|
||
#define elf_sec_group(sec) (elf_section_data(sec)->sec_group)
|
||
|
||
#define xvec_get_elf_backend_data(xvec) \
|
||
((const struct elf_backend_data *) (xvec)->backend_data)
|
||
|
||
#define get_elf_backend_data(abfd) \
|
||
xvec_get_elf_backend_data ((abfd)->xvec)
|
||
|
||
/* The least object attributes (within an attributes subsection) known
|
||
for any target. Some code assumes that the value 0 is not used and
|
||
the field for that attribute can instead be used as a marker to
|
||
indicate that attributes have been initialized. */
|
||
#define LEAST_KNOWN_OBJ_ATTRIBUTE 2
|
||
|
||
/* The maximum number of known object attributes for any target. */
|
||
#define NUM_KNOWN_OBJ_ATTRIBUTES 71
|
||
|
||
/* The value of an object attribute. The type indicates whether the attribute
|
||
holds and integer, a string, or both. It can also indicate that there can
|
||
be no default (i.e. all values must be written to file, even zero). */
|
||
|
||
typedef struct obj_attribute
|
||
{
|
||
#define ATTR_TYPE_FLAG_INT_VAL (1 << 0)
|
||
#define ATTR_TYPE_FLAG_STR_VAL (1 << 1)
|
||
#define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
|
||
|
||
#define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
|
||
#define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
|
||
#define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
|
||
|
||
int type;
|
||
unsigned int i;
|
||
char *s;
|
||
} obj_attribute;
|
||
|
||
typedef struct obj_attribute_list
|
||
{
|
||
struct obj_attribute_list *next;
|
||
int tag;
|
||
obj_attribute attr;
|
||
} obj_attribute_list;
|
||
|
||
/* Object attributes may either be defined by the processor ABI, index
|
||
OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
|
||
(and possibly also processor-specific), index OBJ_ATTR_GNU. */
|
||
#define OBJ_ATTR_PROC 0
|
||
#define OBJ_ATTR_GNU 1
|
||
#define OBJ_ATTR_FIRST OBJ_ATTR_PROC
|
||
#define OBJ_ATTR_LAST OBJ_ATTR_GNU
|
||
|
||
/* The following object attribute tags are taken as generic, for all
|
||
targets and for "gnu" where there is no target standard. */
|
||
enum
|
||
{
|
||
Tag_NULL = 0,
|
||
Tag_File = 1,
|
||
Tag_Section = 2,
|
||
Tag_Symbol = 3,
|
||
Tag_compatibility = 32
|
||
};
|
||
|
||
/* The following struct stores information about every SystemTap section
|
||
found in the object file. */
|
||
struct sdt_note
|
||
{
|
||
struct sdt_note *next;
|
||
bfd_size_type size;
|
||
bfd_byte data[1];
|
||
};
|
||
|
||
/* NT_GNU_BUILD_ID note type info for input BFDs. */
|
||
struct elf_build_id
|
||
{
|
||
size_t size;
|
||
bfd_byte data[1];
|
||
};
|
||
|
||
/* tdata information grabbed from an elf core file. */
|
||
struct core_elf_obj_tdata
|
||
{
|
||
int signal;
|
||
int pid;
|
||
int lwpid;
|
||
char* program;
|
||
char* command;
|
||
};
|
||
|
||
/* Extra tdata information held for output ELF BFDs. */
|
||
struct output_elf_obj_tdata
|
||
{
|
||
struct elf_segment_map *seg_map;
|
||
struct elf_strtab_hash *strtab_ptr;
|
||
|
||
/* STT_SECTION symbols for each section */
|
||
asymbol **section_syms;
|
||
|
||
/* Used to determine if PT_GNU_EH_FRAME segment header should be
|
||
created. */
|
||
asection *eh_frame_hdr;
|
||
|
||
/* NT_GNU_BUILD_ID note type info. */
|
||
struct
|
||
{
|
||
bfd_boolean (*after_write_object_contents) (bfd *);
|
||
const char *style;
|
||
asection *sec;
|
||
} build_id;
|
||
|
||
/* Records the result of `get_program_header_size'. */
|
||
bfd_size_type program_header_size;
|
||
|
||
/* Used when laying out sections. */
|
||
file_ptr next_file_pos;
|
||
|
||
int num_section_syms;
|
||
unsigned int shstrtab_section, strtab_section;
|
||
|
||
/* Segment flags for the PT_GNU_STACK segment. */
|
||
unsigned int stack_flags;
|
||
|
||
/* This is set to TRUE if the object was created by the backend
|
||
linker. */
|
||
bfd_boolean linker;
|
||
|
||
/* Used to determine if the e_flags field has been initialized */
|
||
bfd_boolean flags_init;
|
||
};
|
||
|
||
/* Some private data is stashed away for future use using the tdata pointer
|
||
in the bfd structure. */
|
||
|
||
struct elf_obj_tdata
|
||
{
|
||
Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */
|
||
Elf_Internal_Shdr **elf_sect_ptr;
|
||
Elf_Internal_Phdr *phdr;
|
||
Elf_Internal_Shdr symtab_hdr;
|
||
Elf_Internal_Shdr shstrtab_hdr;
|
||
Elf_Internal_Shdr strtab_hdr;
|
||
Elf_Internal_Shdr dynsymtab_hdr;
|
||
Elf_Internal_Shdr dynstrtab_hdr;
|
||
Elf_Internal_Shdr dynversym_hdr;
|
||
Elf_Internal_Shdr dynverref_hdr;
|
||
Elf_Internal_Shdr dynverdef_hdr;
|
||
Elf_Internal_Shdr symtab_shndx_hdr;
|
||
bfd_vma gp; /* The gp value */
|
||
unsigned int gp_size; /* The gp size */
|
||
unsigned int num_elf_sections; /* elf_sect_ptr size */
|
||
|
||
/* A mapping from external symbols to entries in the linker hash
|
||
table, used when linking. This is indexed by the symbol index
|
||
minus the sh_info field of the symbol table header. */
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
|
||
/* Track usage and final offsets of GOT entries for local symbols.
|
||
This array is indexed by symbol index. Elements are used
|
||
identically to "got" in struct elf_link_hash_entry. */
|
||
union
|
||
{
|
||
bfd_signed_vma *refcounts;
|
||
bfd_vma *offsets;
|
||
struct got_entry **ents;
|
||
} local_got;
|
||
|
||
/* The linker ELF emulation code needs to let the backend ELF linker
|
||
know what filename should be used for a dynamic object if the
|
||
dynamic object is found using a search. The emulation code then
|
||
sometimes needs to know what name was actually used. Until the
|
||
file has been added to the linker symbol table, this field holds
|
||
the name the linker wants. After it has been added, it holds the
|
||
name actually used, which will be the DT_SONAME entry if there is
|
||
one. */
|
||
const char *dt_name;
|
||
|
||
/* The linker emulation needs to know what audit libs
|
||
are used by a dynamic object. */
|
||
const char *dt_audit;
|
||
|
||
/* Used by find_nearest_line entry point. */
|
||
void *line_info;
|
||
|
||
/* A place to stash dwarf1 info for this bfd. */
|
||
struct dwarf1_debug *dwarf1_find_line_info;
|
||
|
||
/* A place to stash dwarf2 info for this bfd. */
|
||
void *dwarf2_find_line_info;
|
||
|
||
/* Stash away info for yet another find line/function variant. */
|
||
void *elf_find_function_cache;
|
||
|
||
/* Number of symbol version definitions we are about to emit. */
|
||
unsigned int cverdefs;
|
||
|
||
/* Number of symbol version references we are about to emit. */
|
||
unsigned int cverrefs;
|
||
|
||
/* Symbol version definitions in external objects. */
|
||
Elf_Internal_Verdef *verdef;
|
||
|
||
/* Symbol version references to external objects. */
|
||
Elf_Internal_Verneed *verref;
|
||
|
||
/* A pointer to the .eh_frame section. */
|
||
asection *eh_frame_section;
|
||
|
||
/* Symbol buffer. */
|
||
void *symbuf;
|
||
|
||
obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES];
|
||
obj_attribute_list *other_obj_attributes[2];
|
||
|
||
/* NT_GNU_BUILD_ID note type. */
|
||
struct elf_build_id *build_id;
|
||
|
||
/* Linked-list containing information about every Systemtap section
|
||
found in the object file. Each section corresponds to one entry
|
||
in the list. */
|
||
struct sdt_note *sdt_note_head;
|
||
|
||
Elf_Internal_Shdr **group_sect_ptr;
|
||
int num_group;
|
||
|
||
unsigned int symtab_section, symtab_shndx_section, dynsymtab_section;
|
||
unsigned int dynversym_section, dynverdef_section, dynverref_section;
|
||
|
||
/* An identifier used to distinguish different target
|
||
specific extensions to this structure. */
|
||
enum elf_target_id object_id;
|
||
|
||
/* Whether a dyanmic object was specified normally on the linker
|
||
command line, or was specified when --as-needed was in effect,
|
||
or was found via a DT_NEEDED entry. */
|
||
enum dynamic_lib_link_class dyn_lib_class;
|
||
|
||
/* Irix 5 often screws up the symbol table, sorting local symbols
|
||
after global symbols. This flag is set if the symbol table in
|
||
this BFD appears to be screwed up. If it is, we ignore the
|
||
sh_info field in the symbol table header, and always read all the
|
||
symbols. */
|
||
bfd_boolean bad_symtab;
|
||
|
||
/* True if the bfd contains symbols that have the STT_GNU_IFUNC
|
||
symbol type or STB_GNU_UNIQUE binding. Used to set the osabi
|
||
field in the ELF header structure. */
|
||
bfd_boolean has_gnu_symbols;
|
||
|
||
/* Information grabbed from an elf core file. */
|
||
struct core_elf_obj_tdata *core;
|
||
|
||
/* More information held for output ELF BFDs. */
|
||
struct output_elf_obj_tdata *o;
|
||
};
|
||
|
||
#define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
|
||
|
||
#define elf_object_id(bfd) (elf_tdata(bfd) -> object_id)
|
||
#define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size)
|
||
#define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
|
||
#define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
|
||
#define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections)
|
||
#define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map)
|
||
#define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos)
|
||
#define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr)
|
||
#define elf_linker(bfd) (elf_tdata(bfd) -> o->linker)
|
||
#define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags)
|
||
#define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr)
|
||
#define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
|
||
#define elf_symtab_shndx(bfd) (elf_tdata(bfd) -> symtab_shndx_section)
|
||
#define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section)
|
||
#define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section)
|
||
#define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr)
|
||
#define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
|
||
#define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
|
||
#define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
|
||
#define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
|
||
#define elf_eh_frame_section(bfd) \
|
||
(elf_tdata(bfd) -> eh_frame_section)
|
||
#define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms)
|
||
#define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms)
|
||
#define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
|
||
#define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
|
||
#define elf_gp(bfd) (elf_tdata(bfd) -> gp)
|
||
#define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
|
||
#define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
|
||
#define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
|
||
#define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
|
||
#define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
|
||
#define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
|
||
#define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit)
|
||
#define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
|
||
#define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
|
||
#define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init)
|
||
#define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes)
|
||
#define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes)
|
||
#define elf_known_obj_attributes_proc(bfd) \
|
||
(elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC])
|
||
#define elf_other_obj_attributes_proc(bfd) \
|
||
(elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC])
|
||
|
||
extern void _bfd_elf_swap_verdef_in
|
||
(bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *);
|
||
extern void _bfd_elf_swap_verdef_out
|
||
(bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *);
|
||
extern void _bfd_elf_swap_verdaux_in
|
||
(bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *);
|
||
extern void _bfd_elf_swap_verdaux_out
|
||
(bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *);
|
||
extern void _bfd_elf_swap_verneed_in
|
||
(bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *);
|
||
extern void _bfd_elf_swap_verneed_out
|
||
(bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *);
|
||
extern void _bfd_elf_swap_vernaux_in
|
||
(bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *);
|
||
extern void _bfd_elf_swap_vernaux_out
|
||
(bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *);
|
||
extern void _bfd_elf_swap_versym_in
|
||
(bfd *, const Elf_External_Versym *, Elf_Internal_Versym *);
|
||
extern void _bfd_elf_swap_versym_out
|
||
(bfd *, const Elf_Internal_Versym *, Elf_External_Versym *);
|
||
|
||
extern unsigned int _bfd_elf_section_from_bfd_section
|
||
(bfd *, asection *);
|
||
extern char *bfd_elf_string_from_elf_section
|
||
(bfd *, unsigned, unsigned);
|
||
extern Elf_Internal_Sym *bfd_elf_get_elf_syms
|
||
(bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *,
|
||
Elf_External_Sym_Shndx *);
|
||
extern const char *bfd_elf_sym_name
|
||
(bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *, asection *);
|
||
|
||
extern bfd_boolean _bfd_elf_copy_private_bfd_data
|
||
(bfd *, bfd *);
|
||
extern bfd_boolean _bfd_elf_print_private_bfd_data
|
||
(bfd *, void *);
|
||
extern void bfd_elf_print_symbol
|
||
(bfd *, void *, asymbol *, bfd_print_symbol_type);
|
||
|
||
extern unsigned int _bfd_elf_eh_frame_address_size
|
||
(bfd *, asection *);
|
||
extern bfd_byte _bfd_elf_encode_eh_address
|
||
(bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset,
|
||
asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded);
|
||
extern bfd_boolean _bfd_elf_can_make_relative
|
||
(bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section);
|
||
|
||
extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
|
||
(const struct bfd_link_info *, const asection *,
|
||
const Elf_Internal_Rela *);
|
||
extern bfd_vma _bfd_elf_rela_local_sym
|
||
(bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *);
|
||
extern bfd_vma _bfd_elf_rel_local_sym
|
||
(bfd *, Elf_Internal_Sym *, asection **, bfd_vma);
|
||
extern bfd_vma _bfd_elf_section_offset
|
||
(bfd *, struct bfd_link_info *, asection *, bfd_vma);
|
||
|
||
extern unsigned long bfd_elf_hash
|
||
(const char *);
|
||
extern unsigned long bfd_elf_gnu_hash
|
||
(const char *);
|
||
|
||
extern bfd_reloc_status_type bfd_elf_generic_reloc
|
||
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
||
extern bfd_boolean bfd_elf_allocate_object
|
||
(bfd *, size_t, enum elf_target_id);
|
||
extern bfd_boolean bfd_elf_make_object
|
||
(bfd *);
|
||
extern bfd_boolean bfd_elf_mkcorefile
|
||
(bfd *);
|
||
extern bfd_boolean _bfd_elf_make_section_from_shdr
|
||
(bfd *, Elf_Internal_Shdr *, const char *, int);
|
||
extern bfd_boolean _bfd_elf_make_section_from_phdr
|
||
(bfd *, Elf_Internal_Phdr *, int, const char *);
|
||
extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
|
||
(struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
|
||
extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
|
||
(bfd *);
|
||
extern void _bfd_elf_link_hash_table_free
|
||
(struct bfd_link_hash_table *);
|
||
extern void _bfd_elf_link_hash_copy_indirect
|
||
(struct bfd_link_info *, struct elf_link_hash_entry *,
|
||
struct elf_link_hash_entry *);
|
||
extern void _bfd_elf_link_hash_hide_symbol
|
||
(struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean);
|
||
extern bfd_boolean _bfd_elf_link_hash_fixup_symbol
|
||
(struct bfd_link_info *, struct elf_link_hash_entry *);
|
||
extern bfd_boolean _bfd_elf_link_hash_table_init
|
||
(struct elf_link_hash_table *, bfd *,
|
||
struct bfd_hash_entry *(*)
|
||
(struct bfd_hash_entry *, struct bfd_hash_table *, const char *),
|
||
unsigned int, enum elf_target_id);
|
||
extern bfd_boolean _bfd_elf_slurp_version_tables
|
||
(bfd *, bfd_boolean);
|
||
extern bfd_boolean _bfd_elf_merge_sections
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_match_sections_by_type
|
||
(bfd *, const asection *, bfd *, const asection *);
|
||
extern bfd_boolean bfd_elf_is_group_section
|
||
(bfd *, const struct bfd_section *);
|
||
extern bfd_boolean _bfd_elf_section_already_linked
|
||
(bfd *, asection *, struct bfd_link_info *);
|
||
extern void bfd_elf_set_group_contents
|
||
(bfd *, asection *, void *);
|
||
extern asection *_bfd_elf_check_kept_section
|
||
(asection *, struct bfd_link_info *);
|
||
#define _bfd_elf_link_just_syms _bfd_generic_link_just_syms
|
||
extern void _bfd_elf_copy_link_hash_symbol_type
|
||
(bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *);
|
||
extern bfd_boolean _bfd_elf_size_group_sections
|
||
(struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_fixup_group_sections
|
||
(bfd *, asection *);
|
||
extern bfd_boolean _bfd_elf_copy_private_header_data
|
||
(bfd *, bfd *);
|
||
extern bfd_boolean _bfd_elf_copy_private_symbol_data
|
||
(bfd *, asymbol *, bfd *, asymbol *);
|
||
#define _bfd_generic_init_private_section_data \
|
||
_bfd_elf_init_private_section_data
|
||
extern bfd_boolean _bfd_elf_init_private_section_data
|
||
(bfd *, asection *, bfd *, asection *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_copy_private_section_data
|
||
(bfd *, asection *, bfd *, asection *);
|
||
extern bfd_boolean _bfd_elf_write_object_contents
|
||
(bfd *);
|
||
extern bfd_boolean _bfd_elf_write_corefile_contents
|
||
(bfd *);
|
||
extern bfd_boolean _bfd_elf_set_section_contents
|
||
(bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
|
||
extern long _bfd_elf_get_symtab_upper_bound
|
||
(bfd *);
|
||
extern long _bfd_elf_canonicalize_symtab
|
||
(bfd *, asymbol **);
|
||
extern long _bfd_elf_get_dynamic_symtab_upper_bound
|
||
(bfd *);
|
||
extern long _bfd_elf_canonicalize_dynamic_symtab
|
||
(bfd *, asymbol **);
|
||
extern long _bfd_elf_get_synthetic_symtab
|
||
(bfd *, long, asymbol **, long, asymbol **, asymbol **);
|
||
extern long _bfd_elf_get_reloc_upper_bound
|
||
(bfd *, sec_ptr);
|
||
extern long _bfd_elf_canonicalize_reloc
|
||
(bfd *, sec_ptr, arelent **, asymbol **);
|
||
extern asection * _bfd_elf_get_dynamic_reloc_section
|
||
(bfd *, asection *, bfd_boolean);
|
||
extern asection * _bfd_elf_make_dynamic_reloc_section
|
||
(asection *, bfd *, unsigned int, bfd *, bfd_boolean);
|
||
extern long _bfd_elf_get_dynamic_reloc_upper_bound
|
||
(bfd *);
|
||
extern long _bfd_elf_canonicalize_dynamic_reloc
|
||
(bfd *, arelent **, asymbol **);
|
||
extern asymbol *_bfd_elf_make_empty_symbol
|
||
(bfd *);
|
||
extern void _bfd_elf_get_symbol_info
|
||
(bfd *, asymbol *, symbol_info *);
|
||
extern bfd_boolean _bfd_elf_is_local_label_name
|
||
(bfd *, const char *);
|
||
extern alent *_bfd_elf_get_lineno
|
||
(bfd *, asymbol *);
|
||
extern bfd_boolean _bfd_elf_set_arch_mach
|
||
(bfd *, enum bfd_architecture, unsigned long);
|
||
extern bfd_boolean _bfd_elf_find_nearest_line
|
||
(bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
|
||
unsigned int *);
|
||
extern bfd_boolean _bfd_elf_find_nearest_line_discriminator
|
||
(bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
|
||
unsigned int *, unsigned int *);
|
||
extern bfd_boolean _bfd_elf_find_line
|
||
(bfd *, asymbol **, asymbol *, const char **, unsigned int *);
|
||
extern bfd_boolean _bfd_elf_find_line_discriminator
|
||
(bfd *, asymbol **, asymbol *, const char **, unsigned int *, unsigned int *);
|
||
#define _bfd_generic_find_line _bfd_elf_find_line
|
||
#define _bfd_generic_find_nearest_line_discriminator \
|
||
_bfd_elf_find_nearest_line_discriminator
|
||
extern bfd_boolean _bfd_elf_find_inliner_info
|
||
(bfd *, const char **, const char **, unsigned int *);
|
||
#define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
|
||
#define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
|
||
extern int _bfd_elf_sizeof_headers
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_new_section_hook
|
||
(bfd *, asection *);
|
||
extern const struct bfd_elf_special_section *_bfd_elf_get_special_section
|
||
(const char *, const struct bfd_elf_special_section *, unsigned int);
|
||
extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr
|
||
(bfd *, asection *);
|
||
|
||
/* If the target doesn't have reloc handling written yet: */
|
||
extern void _bfd_elf_no_info_to_howto
|
||
(bfd *, arelent *, Elf_Internal_Rela *);
|
||
|
||
extern bfd_boolean bfd_section_from_shdr
|
||
(bfd *, unsigned int shindex);
|
||
extern bfd_boolean bfd_section_from_phdr
|
||
(bfd *, Elf_Internal_Phdr *, int);
|
||
|
||
extern int _bfd_elf_symbol_from_bfd_symbol
|
||
(bfd *, asymbol **);
|
||
|
||
extern Elf_Internal_Sym *bfd_sym_from_r_symndx
|
||
(struct sym_cache *, bfd *, unsigned long);
|
||
extern asection *bfd_section_from_elf_index
|
||
(bfd *, unsigned int);
|
||
extern struct bfd_strtab_hash *_bfd_elf_stringtab_init
|
||
(void);
|
||
|
||
extern struct elf_strtab_hash * _bfd_elf_strtab_init
|
||
(void);
|
||
extern void _bfd_elf_strtab_free
|
||
(struct elf_strtab_hash *);
|
||
extern bfd_size_type _bfd_elf_strtab_add
|
||
(struct elf_strtab_hash *, const char *, bfd_boolean);
|
||
extern void _bfd_elf_strtab_addref
|
||
(struct elf_strtab_hash *, bfd_size_type);
|
||
extern void _bfd_elf_strtab_delref
|
||
(struct elf_strtab_hash *, bfd_size_type);
|
||
extern unsigned int _bfd_elf_strtab_refcount
|
||
(struct elf_strtab_hash *, bfd_size_type);
|
||
extern void _bfd_elf_strtab_clear_all_refs
|
||
(struct elf_strtab_hash *tab);
|
||
extern void _bfd_elf_strtab_restore_size
|
||
(struct elf_strtab_hash *, bfd_size_type);
|
||
extern bfd_size_type _bfd_elf_strtab_size
|
||
(struct elf_strtab_hash *);
|
||
extern bfd_size_type _bfd_elf_strtab_offset
|
||
(struct elf_strtab_hash *, bfd_size_type);
|
||
extern bfd_boolean _bfd_elf_strtab_emit
|
||
(bfd *, struct elf_strtab_hash *);
|
||
extern void _bfd_elf_strtab_finalize
|
||
(struct elf_strtab_hash *);
|
||
|
||
extern void _bfd_elf_begin_eh_frame_parsing
|
||
(struct bfd_link_info *info);
|
||
extern void _bfd_elf_parse_eh_frame
|
||
(bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *);
|
||
extern void _bfd_elf_end_eh_frame_parsing
|
||
(struct bfd_link_info *info);
|
||
|
||
extern bfd_boolean _bfd_elf_discard_section_eh_frame
|
||
(bfd *, struct bfd_link_info *, asection *,
|
||
bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *);
|
||
extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_vma _bfd_elf_eh_frame_section_offset
|
||
(bfd *, struct bfd_link_info *, asection *, bfd_vma);
|
||
extern bfd_boolean _bfd_elf_write_section_eh_frame
|
||
(bfd *, struct bfd_link_info *, asection *, bfd_byte *);
|
||
extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_eh_frame_present
|
||
(struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
|
||
(struct bfd_link_info *);
|
||
|
||
extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *);
|
||
|
||
extern long _bfd_elf_link_lookup_local_dynindx
|
||
(struct bfd_link_info *, bfd *, long);
|
||
extern bfd_boolean _bfd_elf_compute_section_file_positions
|
||
(bfd *, struct bfd_link_info *);
|
||
extern void _bfd_elf_assign_file_positions_for_relocs
|
||
(bfd *);
|
||
extern file_ptr _bfd_elf_assign_file_position_for_section
|
||
(Elf_Internal_Shdr *, file_ptr, bfd_boolean);
|
||
|
||
extern bfd_boolean _bfd_elf_validate_reloc
|
||
(bfd *, arelent *);
|
||
|
||
extern bfd_boolean _bfd_elf_link_create_dynamic_sections
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_link_omit_section_dynsym
|
||
(bfd *, struct bfd_link_info *, asection *);
|
||
extern bfd_boolean _bfd_elf_create_dynamic_sections
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_create_got_section
|
||
(bfd *, struct bfd_link_info *);
|
||
extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym
|
||
(bfd *, struct bfd_link_info *, asection *, const char *);
|
||
extern void _bfd_elf_init_1_index_section
|
||
(bfd *, struct bfd_link_info *);
|
||
extern void _bfd_elf_init_2_index_sections
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
extern bfd_boolean _bfd_elfcore_make_pseudosection
|
||
(bfd *, char *, size_t, ufile_ptr);
|
||
extern char *_bfd_elfcore_strndup
|
||
(bfd *, char *, size_t);
|
||
|
||
extern Elf_Internal_Rela *_bfd_elf_link_read_relocs
|
||
(bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean);
|
||
|
||
extern bfd_boolean _bfd_elf_link_output_relocs
|
||
(bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
|
||
struct elf_link_hash_entry **);
|
||
|
||
extern bfd_boolean _bfd_elf_adjust_dynamic_copy
|
||
(struct elf_link_hash_entry *, asection *);
|
||
|
||
extern bfd_boolean _bfd_elf_dynamic_symbol_p
|
||
(struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
|
||
|
||
extern bfd_boolean _bfd_elf_symbol_refs_local_p
|
||
(struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
|
||
|
||
extern bfd_reloc_status_type bfd_elf_perform_complex_relocation
|
||
(bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma);
|
||
|
||
extern bfd_boolean _bfd_elf_setup_sections
|
||
(bfd *);
|
||
|
||
extern void _bfd_elf_set_osabi (bfd * , struct bfd_link_info *);
|
||
|
||
extern const bfd_target *bfd_elf32_object_p
|
||
(bfd *);
|
||
extern const bfd_target *bfd_elf32_core_file_p
|
||
(bfd *);
|
||
extern char *bfd_elf32_core_file_failing_command
|
||
(bfd *);
|
||
extern int bfd_elf32_core_file_failing_signal
|
||
(bfd *);
|
||
extern bfd_boolean bfd_elf32_core_file_matches_executable_p
|
||
(bfd *, bfd *);
|
||
extern int bfd_elf32_core_file_pid
|
||
(bfd *);
|
||
|
||
extern bfd_boolean bfd_elf32_swap_symbol_in
|
||
(bfd *, const void *, const void *, Elf_Internal_Sym *);
|
||
extern void bfd_elf32_swap_symbol_out
|
||
(bfd *, const Elf_Internal_Sym *, void *, void *);
|
||
extern void bfd_elf32_swap_reloc_in
|
||
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
|
||
extern void bfd_elf32_swap_reloc_out
|
||
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
extern void bfd_elf32_swap_reloca_in
|
||
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
|
||
extern void bfd_elf32_swap_reloca_out
|
||
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
extern void bfd_elf32_swap_phdr_in
|
||
(bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *);
|
||
extern void bfd_elf32_swap_phdr_out
|
||
(bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *);
|
||
extern void bfd_elf32_swap_dyn_in
|
||
(bfd *, const void *, Elf_Internal_Dyn *);
|
||
extern void bfd_elf32_swap_dyn_out
|
||
(bfd *, const Elf_Internal_Dyn *, void *);
|
||
extern long bfd_elf32_slurp_symbol_table
|
||
(bfd *, asymbol **, bfd_boolean);
|
||
extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
|
||
(bfd *);
|
||
extern int bfd_elf32_write_out_phdrs
|
||
(bfd *, const Elf_Internal_Phdr *, unsigned int);
|
||
extern bfd_boolean bfd_elf32_checksum_contents
|
||
(bfd * , void (*) (const void *, size_t, void *), void *);
|
||
extern void bfd_elf32_write_relocs
|
||
(bfd *, asection *, void *);
|
||
extern bfd_boolean bfd_elf32_slurp_reloc_table
|
||
(bfd *, asection *, asymbol **, bfd_boolean);
|
||
|
||
extern const bfd_target *bfd_elf64_object_p
|
||
(bfd *);
|
||
extern const bfd_target *bfd_elf64_core_file_p
|
||
(bfd *);
|
||
extern char *bfd_elf64_core_file_failing_command
|
||
(bfd *);
|
||
extern int bfd_elf64_core_file_failing_signal
|
||
(bfd *);
|
||
extern bfd_boolean bfd_elf64_core_file_matches_executable_p
|
||
(bfd *, bfd *);
|
||
extern int bfd_elf64_core_file_pid
|
||
(bfd *);
|
||
|
||
extern bfd_boolean bfd_elf64_swap_symbol_in
|
||
(bfd *, const void *, const void *, Elf_Internal_Sym *);
|
||
extern void bfd_elf64_swap_symbol_out
|
||
(bfd *, const Elf_Internal_Sym *, void *, void *);
|
||
extern void bfd_elf64_swap_reloc_in
|
||
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
|
||
extern void bfd_elf64_swap_reloc_out
|
||
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
extern void bfd_elf64_swap_reloca_in
|
||
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
|
||
extern void bfd_elf64_swap_reloca_out
|
||
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
extern void bfd_elf64_swap_phdr_in
|
||
(bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *);
|
||
extern void bfd_elf64_swap_phdr_out
|
||
(bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *);
|
||
extern void bfd_elf64_swap_dyn_in
|
||
(bfd *, const void *, Elf_Internal_Dyn *);
|
||
extern void bfd_elf64_swap_dyn_out
|
||
(bfd *, const Elf_Internal_Dyn *, void *);
|
||
extern long bfd_elf64_slurp_symbol_table
|
||
(bfd *, asymbol **, bfd_boolean);
|
||
extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
|
||
(bfd *);
|
||
extern int bfd_elf64_write_out_phdrs
|
||
(bfd *, const Elf_Internal_Phdr *, unsigned int);
|
||
extern bfd_boolean bfd_elf64_checksum_contents
|
||
(bfd * , void (*) (const void *, size_t, void *), void *);
|
||
extern void bfd_elf64_write_relocs
|
||
(bfd *, asection *, void *);
|
||
extern bfd_boolean bfd_elf64_slurp_reloc_table
|
||
(bfd *, asection *, asymbol **, bfd_boolean);
|
||
|
||
extern bfd_boolean _bfd_elf_default_relocs_compatible
|
||
(const bfd_target *, const bfd_target *);
|
||
|
||
extern bfd_boolean _bfd_elf_relocs_compatible
|
||
(const bfd_target *, const bfd_target *);
|
||
|
||
extern struct elf_link_hash_entry *_bfd_elf_archive_symbol_lookup
|
||
(bfd *, struct bfd_link_info *, const char *);
|
||
extern bfd_boolean bfd_elf_link_add_symbols
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_add_dynamic_entry
|
||
(struct bfd_link_info *, bfd_vma, bfd_vma);
|
||
|
||
extern bfd_boolean bfd_elf_link_record_dynamic_symbol
|
||
(struct bfd_link_info *, struct elf_link_hash_entry *);
|
||
|
||
extern int bfd_elf_link_record_local_dynamic_symbol
|
||
(struct bfd_link_info *, bfd *, long);
|
||
|
||
extern bfd_boolean _bfd_elf_close_and_cleanup
|
||
(bfd *);
|
||
|
||
extern bfd_boolean _bfd_elf_common_definition
|
||
(Elf_Internal_Sym *);
|
||
|
||
extern unsigned int _bfd_elf_common_section_index
|
||
(asection *);
|
||
|
||
extern asection *_bfd_elf_common_section
|
||
(asection *);
|
||
|
||
extern bfd_vma _bfd_elf_default_got_elt_size
|
||
(bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, bfd *,
|
||
unsigned long);
|
||
|
||
extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
|
||
(bfd *, arelent *, struct bfd_symbol *, void *,
|
||
asection *, bfd *, char **);
|
||
|
||
extern bfd_boolean bfd_elf_final_link
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
extern void _bfd_elf_gc_keep
|
||
(struct bfd_link_info *info);
|
||
|
||
extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol
|
||
(struct elf_link_hash_entry *h, void *inf);
|
||
|
||
extern bfd_boolean bfd_elf_gc_sections
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
extern bfd_boolean bfd_elf_gc_record_vtinherit
|
||
(bfd *, asection *, struct elf_link_hash_entry *, bfd_vma);
|
||
|
||
extern bfd_boolean bfd_elf_gc_record_vtentry
|
||
(bfd *, asection *, struct elf_link_hash_entry *, bfd_vma);
|
||
|
||
extern asection *_bfd_elf_gc_mark_hook
|
||
(asection *, struct bfd_link_info *, Elf_Internal_Rela *,
|
||
struct elf_link_hash_entry *, Elf_Internal_Sym *);
|
||
|
||
extern asection *_bfd_elf_gc_mark_rsec
|
||
(struct bfd_link_info *, asection *, elf_gc_mark_hook_fn,
|
||
struct elf_reloc_cookie *);
|
||
|
||
extern bfd_boolean _bfd_elf_gc_mark_reloc
|
||
(struct bfd_link_info *, asection *, elf_gc_mark_hook_fn,
|
||
struct elf_reloc_cookie *);
|
||
|
||
extern bfd_boolean _bfd_elf_gc_mark_fdes
|
||
(struct bfd_link_info *, asection *, asection *, elf_gc_mark_hook_fn,
|
||
struct elf_reloc_cookie *);
|
||
|
||
extern bfd_boolean _bfd_elf_gc_mark
|
||
(struct bfd_link_info *, asection *, elf_gc_mark_hook_fn);
|
||
|
||
extern bfd_boolean _bfd_elf_gc_mark_extra_sections
|
||
(struct bfd_link_info *, elf_gc_mark_hook_fn);
|
||
|
||
extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
extern bfd_boolean bfd_elf_gc_common_final_link
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
|
||
(bfd_vma, void *);
|
||
|
||
extern struct elf_segment_map * _bfd_elf_make_dynamic_segment
|
||
(bfd *, asection *);
|
||
|
||
extern bfd_boolean _bfd_elf_map_sections_to_segments
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
extern bfd_boolean _bfd_elf_is_function_type (unsigned int);
|
||
|
||
extern bfd_size_type _bfd_elf_maybe_function_sym (const asymbol *, asection *,
|
||
bfd_vma *);
|
||
|
||
extern int bfd_elf_get_default_section_type (flagword);
|
||
|
||
extern bfd_boolean bfd_elf_lookup_section_flags
|
||
(struct bfd_link_info *, struct flag_info *, asection *);
|
||
|
||
extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section
|
||
(bfd * abfd, asection * section);
|
||
|
||
/* Exported interface for writing elf corefile notes. */
|
||
extern char *elfcore_write_note
|
||
(bfd *, char *, int *, const char *, int, const void *, int);
|
||
extern char *elfcore_write_prpsinfo
|
||
(bfd *, char *, int *, const char *, const char *);
|
||
extern char *elfcore_write_prstatus
|
||
(bfd *, char *, int *, long, int, const void *);
|
||
extern char * elfcore_write_pstatus
|
||
(bfd *, char *, int *, long, int, const void *);
|
||
extern char *elfcore_write_prfpreg
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_prxfpreg
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_xstatereg
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_ppc_vmx
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_ppc_vsx
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_s390_timer
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_s390_todcmp
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_s390_todpreg
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_s390_ctrs
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_s390_prefix
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_s390_last_break
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_s390_system_call
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_s390_tdb
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_arm_vfp
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_aarch_tls
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_aarch_hw_break
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_aarch_hw_watch
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_lwpstatus
|
||
(bfd *, char *, int *, long, int, const void *);
|
||
extern char *elfcore_write_register_note
|
||
(bfd *, char *, int *, const char *, const void *, int);
|
||
|
||
/* Internal structure which holds information to be included in the
|
||
PRPSINFO section of Linux core files.
|
||
|
||
This is an "internal" structure in the sense that it should be used
|
||
to pass information to BFD (via the `elfcore_write_linux_prpsinfo'
|
||
function), so things like endianess shouldn't be an issue. This
|
||
structure will eventually be converted in one of the
|
||
`elf_external_linux_*' structures and written out to an output bfd
|
||
by one of the functions declared below. */
|
||
|
||
struct elf_internal_linux_prpsinfo
|
||
{
|
||
char pr_state; /* Numeric process state. */
|
||
char pr_sname; /* Char for pr_state. */
|
||
char pr_zomb; /* Zombie. */
|
||
char pr_nice; /* Nice val. */
|
||
unsigned long pr_flag; /* Flags. */
|
||
unsigned int pr_uid;
|
||
unsigned int pr_gid;
|
||
int pr_pid, pr_ppid, pr_pgrp, pr_sid;
|
||
char pr_fname[16 + 1]; /* Filename of executable. */
|
||
char pr_psargs[80 + 1]; /* Initial part of arg list. */
|
||
};
|
||
|
||
/* Linux/most 32-bit archs. */
|
||
extern char *elfcore_write_linux_prpsinfo32
|
||
(bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *);
|
||
|
||
/* Linux/most 64-bit archs. */
|
||
extern char *elfcore_write_linux_prpsinfo64
|
||
(bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *);
|
||
|
||
/* Linux/PPC32 uses different layout compared to most archs. */
|
||
extern char *elfcore_write_ppc_linux_prpsinfo32
|
||
(bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *);
|
||
|
||
extern bfd *_bfd_elf32_bfd_from_remote_memory
|
||
(bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
|
||
int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type));
|
||
extern bfd *_bfd_elf64_bfd_from_remote_memory
|
||
(bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
|
||
int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type));
|
||
|
||
extern bfd_vma bfd_elf_obj_attr_size (bfd *);
|
||
extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma);
|
||
extern int bfd_elf_get_obj_attr_int (bfd *, int, int);
|
||
extern void bfd_elf_add_obj_attr_int (bfd *, int, int, unsigned int);
|
||
#define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
|
||
bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
|
||
extern void bfd_elf_add_obj_attr_string (bfd *, int, int, const char *);
|
||
#define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
|
||
bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
|
||
extern void bfd_elf_add_obj_attr_int_string (bfd *, int, int, unsigned int,
|
||
const char *);
|
||
#define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
|
||
bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
|
||
(INTVAL), (STRVAL))
|
||
|
||
extern char *_bfd_elf_attr_strdup (bfd *, const char *);
|
||
extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *);
|
||
extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, int);
|
||
extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *);
|
||
extern bfd_boolean _bfd_elf_merge_object_attributes (bfd *, bfd *);
|
||
extern bfd_boolean _bfd_elf_merge_unknown_attribute_low (bfd *, bfd *, int);
|
||
extern bfd_boolean _bfd_elf_merge_unknown_attribute_list (bfd *, bfd *);
|
||
extern Elf_Internal_Shdr *_bfd_elf_single_rel_hdr (asection *sec);
|
||
|
||
/* The linker may need to keep track of the number of relocs that it
|
||
decides to copy as dynamic relocs in check_relocs for each symbol.
|
||
This is so that it can later discard them if they are found to be
|
||
unnecessary. We can store the information in a field extending the
|
||
regular ELF linker hash table. */
|
||
|
||
struct elf_dyn_relocs
|
||
{
|
||
struct elf_dyn_relocs *next;
|
||
|
||
/* The input section of the reloc. */
|
||
asection *sec;
|
||
|
||
/* Total number of relocs copied for the input section. */
|
||
bfd_size_type count;
|
||
|
||
/* Number of pc-relative relocs copied for the input section. */
|
||
bfd_size_type pc_count;
|
||
};
|
||
|
||
extern bfd_boolean _bfd_elf_create_ifunc_sections
|
||
(bfd *, struct bfd_link_info *);
|
||
extern asection * _bfd_elf_create_ifunc_dyn_reloc
|
||
(bfd *, struct bfd_link_info *, asection *sec, asection *sreloc,
|
||
struct elf_dyn_relocs **);
|
||
extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
|
||
(struct bfd_link_info *, struct elf_link_hash_entry *,
|
||
struct elf_dyn_relocs **, unsigned int, unsigned int);
|
||
|
||
extern void elf_append_rela (bfd *, asection *, Elf_Internal_Rela *);
|
||
extern void elf_append_rel (bfd *, asection *, Elf_Internal_Rela *);
|
||
|
||
extern bfd_vma elf64_r_info (bfd_vma, bfd_vma);
|
||
extern bfd_vma elf64_r_sym (bfd_vma);
|
||
extern bfd_vma elf32_r_info (bfd_vma, bfd_vma);
|
||
extern bfd_vma elf32_r_sym (bfd_vma);
|
||
|
||
/* Large common section. */
|
||
extern asection _bfd_elf_large_com_section;
|
||
|
||
/* Hash for local symbol with the first section id, ID, in the input
|
||
file and the local symbol index, SYM. */
|
||
#define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
|
||
(((((ID) & 0xff) << 24) | (((ID) & 0xff00) << 8)) \
|
||
^ (SYM) ^ ((ID) >> 16))
|
||
|
||
/* This is the condition under which finish_dynamic_symbol will be called.
|
||
If our finish_dynamic_symbol isn't called, we'll need to do something
|
||
about initializing any .plt and .got entries in relocate_section. */
|
||
#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
|
||
((DYN) \
|
||
&& ((SHARED) || !(H)->forced_local) \
|
||
&& ((H)->dynindx != -1 || (H)->forced_local))
|
||
|
||
/* This macro is to avoid lots of duplicated code in the body
|
||
of xxx_relocate_section() in the various elfxx-xxxx.c files. */
|
||
#define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \
|
||
r_symndx, symtab_hdr, sym_hashes, \
|
||
h, sec, relocation, \
|
||
unresolved_reloc, warned) \
|
||
do \
|
||
{ \
|
||
/* It seems this can happen with erroneous or unsupported \
|
||
input (mixing a.out and elf in an archive, for example.) */ \
|
||
if (sym_hashes == NULL) \
|
||
return FALSE; \
|
||
\
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \
|
||
\
|
||
while (h->root.type == bfd_link_hash_indirect \
|
||
|| h->root.type == bfd_link_hash_warning) \
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link; \
|
||
\
|
||
warned = FALSE; \
|
||
unresolved_reloc = FALSE; \
|
||
relocation = 0; \
|
||
if (h->root.type == bfd_link_hash_defined \
|
||
|| h->root.type == bfd_link_hash_defweak) \
|
||
{ \
|
||
sec = h->root.u.def.section; \
|
||
if (sec == NULL \
|
||
|| sec->output_section == NULL) \
|
||
/* Set a flag that will be cleared later if we find a \
|
||
relocation value for this symbol. output_section \
|
||
is typically NULL for symbols satisfied by a shared \
|
||
library. */ \
|
||
unresolved_reloc = TRUE; \
|
||
else \
|
||
relocation = (h->root.u.def.value \
|
||
+ sec->output_section->vma \
|
||
+ sec->output_offset); \
|
||
} \
|
||
else if (h->root.type == bfd_link_hash_undefweak) \
|
||
; \
|
||
else if (info->unresolved_syms_in_objects == RM_IGNORE \
|
||
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \
|
||
; \
|
||
else if (!info->relocatable) \
|
||
{ \
|
||
bfd_boolean err; \
|
||
err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \
|
||
|| ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \
|
||
if (!info->callbacks->undefined_symbol (info, \
|
||
h->root.root.string, \
|
||
input_bfd, \
|
||
input_section, \
|
||
rel->r_offset, err)) \
|
||
return FALSE; \
|
||
warned = TRUE; \
|
||
} \
|
||
(void) unresolved_reloc; \
|
||
(void) warned; \
|
||
} \
|
||
while (0)
|
||
|
||
/* This macro is to avoid lots of duplicated code in the body of the
|
||
loop over relocations in xxx_relocate_section() in the various
|
||
elfxx-xxxx.c files.
|
||
|
||
Handle relocations against symbols from removed linkonce sections,
|
||
or sections discarded by a linker script. When doing a relocatable
|
||
link, we remove such relocations. Otherwise, we just want the
|
||
section contents zeroed and avoid any special processing. */
|
||
#define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
|
||
rel, count, relend, \
|
||
howto, index, contents) \
|
||
{ \
|
||
int i_; \
|
||
_bfd_clear_contents (howto, input_bfd, input_section, \
|
||
contents + rel[index].r_offset); \
|
||
\
|
||
if (info->relocatable \
|
||
&& (input_section->flags & SEC_DEBUGGING)) \
|
||
{ \
|
||
/* Only remove relocations in debug sections since other \
|
||
sections may require relocations. */ \
|
||
Elf_Internal_Shdr *rel_hdr; \
|
||
\
|
||
rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
|
||
\
|
||
/* Avoid empty output section. */ \
|
||
if (rel_hdr->sh_size > count * rel_hdr->sh_entsize) \
|
||
{ \
|
||
rel_hdr->sh_size -= count * rel_hdr->sh_entsize; \
|
||
rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
|
||
rel_hdr->sh_size -= count * rel_hdr->sh_entsize; \
|
||
\
|
||
memmove (rel, rel + count, \
|
||
(relend - rel - count) * sizeof (*rel)); \
|
||
\
|
||
input_section->reloc_count -= count; \
|
||
relend -= count; \
|
||
rel--; \
|
||
continue; \
|
||
} \
|
||
} \
|
||
\
|
||
for (i_ = 0; i_ < count; i_++) \
|
||
{ \
|
||
rel[i_].r_info = 0; \
|
||
rel[i_].r_addend = 0; \
|
||
} \
|
||
rel += count - 1; \
|
||
continue; \
|
||
}
|
||
|
||
/* Will a symbol be bound to the definition within the shared
|
||
library, if any. A unique symbol can never be bound locally. */
|
||
#define SYMBOLIC_BIND(INFO, H) \
|
||
(!(H)->unique_global \
|
||
&& ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic)))
|
||
|
||
#endif /* _LIBELF_H_ */
|