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binutils-gdb/bfd/targets.c
Tom Tromey bacc61fd3e Thread-safety improvements for bfd_check_format_matches 
A gdb bug found that bfd_check_format_matches has some data races when
called from multiple threads.

In particular, it changes the BFD error handler, which is a global.
It also has a local static variable ("in_check_format") that is used
for recursion detection.  And, finally, it may emit warnings to the
per-xvec warning array, which is a global.

This patch removes all the races here.

The first part of patch is to change _bfd_error_handler to directly
handle the needs of bfd_check_format_matches.  This way, the error
handler does not need to be changed.

This change lets us use the new per-thread global
(error_handler_messages, replacing error_handler_bfd) to also remove
the need for in_check_format -- a single variable suffices.

Finally, the global per-xvec array is replaced with a new type that
holds the error messages.  The outermost such type is stack-allocated
in bfd_check_format_matches.

I tested this using the binutils test suite.  I also built gdb with
thread sanitizer and ran the test case that was noted as failing.
Finally, Alan sent me the test file that caused the addition of the
xvec warning code in the first place, and I confirmed that "nm-new"
has the same behavior on this file both before and after this patch.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31264
Co-Authored-By: Alan Modra <amodra@gmail.com>
2024-04-16 14:01:43 -06:00

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/* Generic target-file-type support for the BFD library.
Copyright (C) 1990-2024 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "sysdep.h"
#include "libiberty.h"
#include "bfd.h"
#include "libbfd.h"
#include "fnmatch.h"
/*
It's okay to see some:
#if 0
directives in this source file, as targets.c uses them to exclude
certain BFD vectors. This comment is specially formatted to catch
users who grep for ^#if 0, so please keep it this way!
*/
/*
SECTION
Targets
DESCRIPTION
Each port of BFD to a different machine requires the creation
of a target back end. All the back end provides to the root
part of BFD is a structure containing pointers to functions
which perform certain low level operations on files. BFD
translates the applications's requests through a pointer into
calls to the back end routines.
When a file is opened with <<bfd_openr>>, its format and
target are unknown. BFD uses various mechanisms to determine
how to interpret the file. The operations performed are:
o Create a BFD by calling the internal routine
<<_bfd_new_bfd>>, then call <<bfd_find_target>> with the
target string supplied to <<bfd_openr>> and the new BFD pointer.
o If a null target string was provided to <<bfd_find_target>>,
look up the environment variable <<GNUTARGET>> and use
that as the target string.
o If the target string is still <<NULL>>, or the target string is
<<default>>, then use the first item in the target vector
as the target type, and set <<target_defaulted>> in the BFD to
cause <<bfd_check_format>> to loop through all the targets.
@xref{bfd_target}. @xref{Formats}.
o Otherwise, inspect the elements in the target vector
one by one, until a match on target name is found. When found,
use it.
o Otherwise return the error <<bfd_error_invalid_target>> to
<<bfd_openr>>.
o <<bfd_openr>> attempts to open the file using
<<bfd_open_file>>, and returns the BFD.
Once the BFD has been opened and the target selected, the file
format may be determined. This is done by calling
<<bfd_check_format>> on the BFD with a suggested format.
If <<target_defaulted>> has been set, each possible target
type is tried to see if it recognizes the specified format.
<<bfd_check_format>> returns <<TRUE>> when the caller guesses right.
@menu
@* bfd_target::
@end menu
*/
/*
INODE
bfd_target, , Targets, Targets
DOCDD
SUBSECTION
bfd_target
DESCRIPTION
This structure contains everything that BFD knows about a
target. It includes things like its byte order, name, and which
routines to call to do various operations.
Every BFD points to a target structure with its <<xvec>>
member.
The macros below are used to dispatch to functions through the
<<bfd_target>> vector. They are used in a number of macros further
down in @file{bfd.h}, and are also used when calling various
routines by hand inside the BFD implementation. The @var{arglist}
argument must be parenthesized; it contains all the arguments
to the called function.
They make the documentation (more) unpleasant to read, so if
someone wants to fix this and not break the above, please do.
.#define BFD_SEND(bfd, message, arglist) \
. ((*((bfd)->xvec->message)) arglist)
.
.#ifdef DEBUG_BFD_SEND
.#undef BFD_SEND
.#define BFD_SEND(bfd, message, arglist) \
. (((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \
. ((*((bfd)->xvec->message)) arglist) : \
. (bfd_assert (__FILE__,__LINE__), NULL))
.#endif
For operations which index on the BFD format:
.#define BFD_SEND_FMT(bfd, message, arglist) \
. (((bfd)->xvec->message[(int) ((bfd)->format)]) arglist)
.
.#ifdef DEBUG_BFD_SEND
.#undef BFD_SEND_FMT
.#define BFD_SEND_FMT(bfd, message, arglist) \
. (((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \
. (((bfd)->xvec->message[(int) ((bfd)->format)]) arglist) : \
. (bfd_assert (__FILE__,__LINE__), NULL))
.#endif
.
.{* Defined to TRUE if unused section symbol should be kept. *}
.#ifndef TARGET_KEEP_UNUSED_SECTION_SYMBOLS
.#define TARGET_KEEP_UNUSED_SECTION_SYMBOLS true
.#endif
.
This is the structure which defines the type of BFD this is. The
<<xvec>> member of the struct <<bfd>> itself points here. Each
module that implements access to a different target under BFD,
defines one of these.
FIXME, these names should be rationalised with the names of
the entry points which call them. Too bad we can't have one
macro to define them both!
EXTERNAL
.enum bfd_flavour
.{
. {* N.B. Update bfd_flavour_name if you change this. *}
. bfd_target_unknown_flavour,
. bfd_target_aout_flavour,
. bfd_target_coff_flavour,
. bfd_target_ecoff_flavour,
. bfd_target_xcoff_flavour,
. bfd_target_elf_flavour,
. bfd_target_tekhex_flavour,
. bfd_target_srec_flavour,
. bfd_target_verilog_flavour,
. bfd_target_ihex_flavour,
. bfd_target_som_flavour,
. bfd_target_msdos_flavour,
. bfd_target_evax_flavour,
. bfd_target_mmo_flavour,
. bfd_target_mach_o_flavour,
. bfd_target_pef_flavour,
. bfd_target_pef_xlib_flavour,
. bfd_target_sym_flavour
.};
.
.enum bfd_endian { BFD_ENDIAN_BIG, BFD_ENDIAN_LITTLE, BFD_ENDIAN_UNKNOWN };
.
.{* Forward declarations. *}
.struct flag_info;
.typedef void (*bfd_cleanup) (bfd *);
.
CODE_FRAGMENT
.typedef struct bfd_target
.{
. {* Identifies the kind of target, e.g., SunOS4, Ultrix, etc. *}
. const char *name;
.
. {* The "flavour" of a back end is a general indication about
. the contents of a file. *}
. enum bfd_flavour flavour;
.
. {* The order of bytes within the data area of a file. *}
. enum bfd_endian byteorder;
.
. {* The order of bytes within the header parts of a file. *}
. enum bfd_endian header_byteorder;
.
. {* A mask of all the flags which an executable may have set -
. from the set <<BFD_NO_FLAGS>>, <<HAS_RELOC>>, ...<<D_PAGED>>. *}
. flagword object_flags;
.
. {* A mask of all the flags which a section may have set - from
. the set <<SEC_NO_FLAGS>>, <<SEC_ALLOC>>, ...<<SET_NEVER_LOAD>>. *}
. flagword section_flags;
.
. {* The character normally found at the front of a symbol.
. (if any), perhaps `_'. *}
. char symbol_leading_char;
.
. {* The pad character for file names within an archive header. *}
. char ar_pad_char;
.
. {* The maximum number of characters in an archive header. *}
. unsigned char ar_max_namelen;
.
. {* How well this target matches, used to select between various
. possible targets when more than one target matches. *}
. unsigned char match_priority;
.
. {* TRUE if unused section symbols should be kept. *}
. bool keep_unused_section_symbols;
.
. {* Entries for byte swapping for data. These are different from the
. other entry points, since they don't take a BFD as the first argument.
. Certain other handlers could do the same. *}
. uint64_t (*bfd_getx64) (const void *);
. int64_t (*bfd_getx_signed_64) (const void *);
. void (*bfd_putx64) (uint64_t, void *);
. bfd_vma (*bfd_getx32) (const void *);
. bfd_signed_vma (*bfd_getx_signed_32) (const void *);
. void (*bfd_putx32) (bfd_vma, void *);
. bfd_vma (*bfd_getx16) (const void *);
. bfd_signed_vma (*bfd_getx_signed_16) (const void *);
. void (*bfd_putx16) (bfd_vma, void *);
.
. {* Byte swapping for the headers. *}
. uint64_t (*bfd_h_getx64) (const void *);
. int64_t (*bfd_h_getx_signed_64) (const void *);
. void (*bfd_h_putx64) (uint64_t, void *);
. bfd_vma (*bfd_h_getx32) (const void *);
. bfd_signed_vma (*bfd_h_getx_signed_32) (const void *);
. void (*bfd_h_putx32) (bfd_vma, void *);
. bfd_vma (*bfd_h_getx16) (const void *);
. bfd_signed_vma (*bfd_h_getx_signed_16) (const void *);
. void (*bfd_h_putx16) (bfd_vma, void *);
.
. {* Format dependent routines: these are vectors of entry points
. within the target vector structure, one for each format to check. *}
.
. {* Check the format of a file being read. Return a <<bfd_cleanup>> on
. success or zero on failure. *}
. bfd_cleanup (*_bfd_check_format[bfd_type_end]) (bfd *);
.
. {* Set the format of a file being written. *}
. bool (*_bfd_set_format[bfd_type_end]) (bfd *);
.
. {* Write cached information into a file being written, at <<bfd_close>>. *}
. bool (*_bfd_write_contents[bfd_type_end]) (bfd *);
.
The general target vector. These vectors are initialized using the
BFD_JUMP_TABLE macros.
. {* Generic entry points. *}
.#define BFD_JUMP_TABLE_GENERIC(NAME) \
. NAME##_close_and_cleanup, \
. NAME##_bfd_free_cached_info, \
. NAME##_new_section_hook, \
. NAME##_get_section_contents
.
. {* Called when the BFD is being closed to do any necessary cleanup. *}
. bool (*_close_and_cleanup) (bfd *);
. {* Ask the BFD to free all cached information. *}
. bool (*_bfd_free_cached_info) (bfd *);
. {* Called when a new section is created. *}
. bool (*_new_section_hook) (bfd *, sec_ptr);
. {* Read the contents of a section. *}
. bool (*_bfd_get_section_contents) (bfd *, sec_ptr, void *, file_ptr,
. bfd_size_type);
.
. {* Entry points to copy private data. *}
.#define BFD_JUMP_TABLE_COPY(NAME) \
. NAME##_bfd_copy_private_bfd_data, \
. NAME##_bfd_merge_private_bfd_data, \
. NAME##_init_private_section_data, \
. NAME##_bfd_copy_private_section_data, \
. NAME##_bfd_copy_private_symbol_data, \
. NAME##_bfd_copy_private_header_data, \
. NAME##_bfd_set_private_flags, \
. NAME##_bfd_print_private_bfd_data
.
. {* Called to copy BFD general private data from one object file
. to another. *}
. bool (*_bfd_copy_private_bfd_data) (bfd *, bfd *);
. {* Called to merge BFD general private data from one object file
. to a common output file when linking. *}
. bool (*_bfd_merge_private_bfd_data) (bfd *, struct bfd_link_info *);
. {* Called to initialize BFD private section data from one object file
. to another. *}
.#define bfd_init_private_section_data(ibfd, isec, obfd, osec, link_info) \
. BFD_SEND (obfd, _bfd_init_private_section_data, \
. (ibfd, isec, obfd, osec, link_info))
. bool (*_bfd_init_private_section_data) (bfd *, sec_ptr, bfd *, sec_ptr,
. struct bfd_link_info *);
. {* Called to copy BFD private section data from one object file
. to another. *}
. bool (*_bfd_copy_private_section_data) (bfd *, sec_ptr, bfd *, sec_ptr);
. {* Called to copy BFD private symbol data from one symbol
. to another. *}
. bool (*_bfd_copy_private_symbol_data) (bfd *, asymbol *,
. bfd *, asymbol *);
. {* Called to copy BFD private header data from one object file
. to another. *}
. bool (*_bfd_copy_private_header_data) (bfd *, bfd *);
. {* Called to set private backend flags. *}
. bool (*_bfd_set_private_flags) (bfd *, flagword);
.
. {* Called to print private BFD data. *}
. bool (*_bfd_print_private_bfd_data) (bfd *, void *);
.
. {* Core file entry points. *}
.#define BFD_JUMP_TABLE_CORE(NAME) \
. NAME##_core_file_failing_command, \
. NAME##_core_file_failing_signal, \
. NAME##_core_file_matches_executable_p, \
. NAME##_core_file_pid
.
. char *(*_core_file_failing_command) (bfd *);
. int (*_core_file_failing_signal) (bfd *);
. bool (*_core_file_matches_executable_p) (bfd *, bfd *);
. int (*_core_file_pid) (bfd *);
.
. {* Archive entry points. *}
.#define BFD_JUMP_TABLE_ARCHIVE(NAME) \
. NAME##_slurp_armap, \
. NAME##_slurp_extended_name_table, \
. NAME##_construct_extended_name_table, \
. NAME##_truncate_arname, \
. NAME##_write_armap, \
. NAME##_read_ar_hdr, \
. NAME##_write_ar_hdr, \
. NAME##_openr_next_archived_file, \
. NAME##_get_elt_at_index, \
. NAME##_generic_stat_arch_elt, \
. NAME##_update_armap_timestamp
.
. bool (*_bfd_slurp_armap) (bfd *);
. bool (*_bfd_slurp_extended_name_table) (bfd *);
. bool (*_bfd_construct_extended_name_table) (bfd *, char **,
. bfd_size_type *,
. const char **);
. void (*_bfd_truncate_arname) (bfd *, const char *, char *);
. bool (*write_armap) (bfd *, unsigned, struct orl *, unsigned, int);
. void *(*_bfd_read_ar_hdr_fn) (bfd *);
. bool (*_bfd_write_ar_hdr_fn) (bfd *, bfd *);
. bfd *(*openr_next_archived_file) (bfd *, bfd *);
.#define bfd_get_elt_at_index(b,i) \
. BFD_SEND (b, _bfd_get_elt_at_index, (b,i))
. bfd *(*_bfd_get_elt_at_index) (bfd *, symindex);
. int (*_bfd_stat_arch_elt) (bfd *, struct stat *);
. bool (*_bfd_update_armap_timestamp) (bfd *);
.
. {* Entry points used for symbols. *}
.#define BFD_JUMP_TABLE_SYMBOLS(NAME) \
. NAME##_get_symtab_upper_bound, \
. NAME##_canonicalize_symtab, \
. NAME##_make_empty_symbol, \
. NAME##_print_symbol, \
. NAME##_get_symbol_info, \
. NAME##_get_symbol_version_string, \
. NAME##_bfd_is_local_label_name, \
. NAME##_bfd_is_target_special_symbol, \
. NAME##_get_lineno, \
. NAME##_find_nearest_line, \
. NAME##_find_nearest_line_with_alt, \
. NAME##_find_line, \
. NAME##_find_inliner_info, \
. NAME##_bfd_make_debug_symbol, \
. NAME##_read_minisymbols, \
. NAME##_minisymbol_to_symbol
.
. long (*_bfd_get_symtab_upper_bound) (bfd *);
. long (*_bfd_canonicalize_symtab) (bfd *, struct bfd_symbol **);
. struct bfd_symbol *
. (*_bfd_make_empty_symbol) (bfd *);
. void (*_bfd_print_symbol) (bfd *, void *, struct bfd_symbol *,
. bfd_print_symbol_type);
.#define bfd_print_symbol(b,p,s,e) \
. BFD_SEND (b, _bfd_print_symbol, (b,p,s,e))
. void (*_bfd_get_symbol_info) (bfd *, struct bfd_symbol *, symbol_info *);
.#define bfd_get_symbol_info(b,p,e) \
. BFD_SEND (b, _bfd_get_symbol_info, (b,p,e))
. const char *
. (*_bfd_get_symbol_version_string) (bfd *, struct bfd_symbol *,
. bool, bool *);
.#define bfd_get_symbol_version_string(b,s,p,h) \
. BFD_SEND (b, _bfd_get_symbol_version_string, (b,s,p,h))
. bool (*_bfd_is_local_label_name) (bfd *, const char *);
. bool (*_bfd_is_target_special_symbol) (bfd *, asymbol *);
. alent *
. (*_get_lineno) (bfd *, struct bfd_symbol *);
. bool (*_bfd_find_nearest_line) (bfd *, struct bfd_symbol **,
. struct bfd_section *, bfd_vma,
. const char **, const char **,
. unsigned int *, unsigned int *);
. bool (*_bfd_find_nearest_line_with_alt) (bfd *, const char *,
. struct bfd_symbol **,
. struct bfd_section *, bfd_vma,
. const char **, const char **,
. unsigned int *, unsigned int *);
. bool (*_bfd_find_line) (bfd *, struct bfd_symbol **,
. struct bfd_symbol *, const char **,
. unsigned int *);
. bool (*_bfd_find_inliner_info)
. (bfd *, const char **, const char **, unsigned int *);
. {* Back-door to allow format-aware applications to create debug symbols
. while using BFD for everything else. Currently used by the assembler
. when creating COFF files. *}
. asymbol *
. (*_bfd_make_debug_symbol) (bfd *);
.#define bfd_read_minisymbols(b, d, m, s) \
. BFD_SEND (b, _read_minisymbols, (b, d, m, s))
. long (*_read_minisymbols) (bfd *, bool, void **, unsigned int *);
.#define bfd_minisymbol_to_symbol(b, d, m, f) \
. BFD_SEND (b, _minisymbol_to_symbol, (b, d, m, f))
. asymbol *
. (*_minisymbol_to_symbol) (bfd *, bool, const void *, asymbol *);
.
. {* Routines for relocs. *}
.#define BFD_JUMP_TABLE_RELOCS(NAME) \
. NAME##_get_reloc_upper_bound, \
. NAME##_canonicalize_reloc, \
. NAME##_set_reloc, \
. NAME##_bfd_reloc_type_lookup, \
. NAME##_bfd_reloc_name_lookup
.
. long (*_get_reloc_upper_bound) (bfd *, sec_ptr);
. long (*_bfd_canonicalize_reloc) (bfd *, sec_ptr, arelent **,
. struct bfd_symbol **);
. void (*_bfd_set_reloc) (bfd *, sec_ptr, arelent **, unsigned int);
. {* See documentation on reloc types. *}
. reloc_howto_type *
. (*reloc_type_lookup) (bfd *, bfd_reloc_code_real_type);
. reloc_howto_type *
. (*reloc_name_lookup) (bfd *, const char *);
.
. {* Routines used when writing an object file. *}
.#define BFD_JUMP_TABLE_WRITE(NAME) \
. NAME##_set_arch_mach, \
. NAME##_set_section_contents
.
. bool (*_bfd_set_arch_mach) (bfd *, enum bfd_architecture,
. unsigned long);
. bool (*_bfd_set_section_contents) (bfd *, sec_ptr, const void *,
. file_ptr, bfd_size_type);
.
. {* Routines used by the linker. *}
.#define BFD_JUMP_TABLE_LINK(NAME) \
. NAME##_sizeof_headers, \
. NAME##_bfd_get_relocated_section_contents, \
. NAME##_bfd_relax_section, \
. NAME##_bfd_link_hash_table_create, \
. NAME##_bfd_link_add_symbols, \
. NAME##_bfd_link_just_syms, \
. NAME##_bfd_copy_link_hash_symbol_type, \
. NAME##_bfd_final_link, \
. NAME##_bfd_link_split_section, \
. NAME##_bfd_link_check_relocs, \
. NAME##_bfd_gc_sections, \
. NAME##_bfd_lookup_section_flags, \
. NAME##_bfd_merge_sections, \
. NAME##_bfd_is_group_section, \
. NAME##_bfd_group_name, \
. NAME##_bfd_discard_group, \
. NAME##_section_already_linked, \
. NAME##_bfd_define_common_symbol, \
. NAME##_bfd_link_hide_symbol, \
. NAME##_bfd_define_start_stop
.
. int (*_bfd_sizeof_headers) (bfd *, struct bfd_link_info *);
. bfd_byte *
. (*_bfd_get_relocated_section_contents) (bfd *,
. struct bfd_link_info *,
. struct bfd_link_order *,
. bfd_byte *, bool,
. struct bfd_symbol **);
.
. bool (*_bfd_relax_section) (bfd *, struct bfd_section *,
. struct bfd_link_info *, bool *);
.
. {* Create a hash table for the linker. Different backends store
. different information in this table. *}
. struct bfd_link_hash_table *
. (*_bfd_link_hash_table_create) (bfd *);
.
. {* Add symbols from this object file into the hash table. *}
. bool (*_bfd_link_add_symbols) (bfd *, struct bfd_link_info *);
.
. {* Indicate that we are only retrieving symbol values from this section. *}
. void (*_bfd_link_just_syms) (asection *, struct bfd_link_info *);
.
. {* Copy the symbol type and other attributes for a linker script
. assignment of one symbol to another. *}
.#define bfd_copy_link_hash_symbol_type(b, t, f) \
. BFD_SEND (b, _bfd_copy_link_hash_symbol_type, (b, t, f))
. void (*_bfd_copy_link_hash_symbol_type) (bfd *,
. struct bfd_link_hash_entry *,
. struct bfd_link_hash_entry *);
.
. {* Do a link based on the link_order structures attached to each
. section of the BFD. *}
. bool (*_bfd_final_link) (bfd *, struct bfd_link_info *);
.
. {* Should this section be split up into smaller pieces during linking. *}
. bool (*_bfd_link_split_section) (bfd *, struct bfd_section *);
.
. {* Check the relocations in the bfd for validity. *}
. bool (* _bfd_link_check_relocs)(bfd *, struct bfd_link_info *);
.
. {* Remove sections that are not referenced from the output. *}
. bool (*_bfd_gc_sections) (bfd *, struct bfd_link_info *);
.
. {* Sets the bitmask of allowed and disallowed section flags. *}
. bool (*_bfd_lookup_section_flags) (struct bfd_link_info *,
. struct flag_info *, asection *);
.
. {* Attempt to merge SEC_MERGE sections. *}
. bool (*_bfd_merge_sections) (bfd *, struct bfd_link_info *);
.
. {* Is this section a member of a group? *}
. bool (*_bfd_is_group_section) (bfd *, const struct bfd_section *);
.
. {* The group name, if section is a member of a group. *}
. const char *(*_bfd_group_name) (bfd *, const struct bfd_section *);
.
. {* Discard members of a group. *}
. bool (*_bfd_discard_group) (bfd *, struct bfd_section *);
.
. {* Check if SEC has been already linked during a reloceatable or
. final link. *}
. bool (*_section_already_linked) (bfd *, asection *,
. struct bfd_link_info *);
.
. {* Define a common symbol. *}
. bool (*_bfd_define_common_symbol) (bfd *, struct bfd_link_info *,
. struct bfd_link_hash_entry *);
.
. {* Hide a symbol. *}
. void (*_bfd_link_hide_symbol) (bfd *, struct bfd_link_info *,
. struct bfd_link_hash_entry *);
.
. {* Define a __start, __stop, .startof. or .sizeof. symbol. *}
. struct bfd_link_hash_entry *
. (*_bfd_define_start_stop) (struct bfd_link_info *, const char *,
. asection *);
.
. {* Routines to handle dynamic symbols and relocs. *}
.#define BFD_JUMP_TABLE_DYNAMIC(NAME) \
. NAME##_get_dynamic_symtab_upper_bound, \
. NAME##_canonicalize_dynamic_symtab, \
. NAME##_get_synthetic_symtab, \
. NAME##_get_dynamic_reloc_upper_bound, \
. NAME##_canonicalize_dynamic_reloc
.
. {* Get the amount of memory required to hold the dynamic symbols. *}
. long (*_bfd_get_dynamic_symtab_upper_bound) (bfd *);
. {* Read in the dynamic symbols. *}
. long (*_bfd_canonicalize_dynamic_symtab) (bfd *, struct bfd_symbol **);
. {* Create synthetized symbols. *}
. long (*_bfd_get_synthetic_symtab) (bfd *, long, struct bfd_symbol **,
. long, struct bfd_symbol **,
. struct bfd_symbol **);
. {* Get the amount of memory required to hold the dynamic relocs. *}
. long (*_bfd_get_dynamic_reloc_upper_bound) (bfd *);
. {* Read in the dynamic relocs. *}
. long (*_bfd_canonicalize_dynamic_reloc) (bfd *, arelent **,
. struct bfd_symbol **);
.
A pointer to an alternative bfd_target in case the current one is not
satisfactory. This can happen when the target cpu supports both big
and little endian code, and target chosen by the linker has the wrong
endianness. The function open_output() in ld/ldlang.c uses this field
to find an alternative output format that is suitable.
. {* Opposite endian version of this target. *}
. const struct bfd_target *alternative_target;
.
. {* Data for use by back-end routines, which isn't
. generic enough to belong in this structure. *}
. const void *backend_data;
.
.} bfd_target;
.
.static inline const char *
.bfd_get_target (const bfd *abfd)
.{
. return abfd->xvec->name;
.}
.
.static inline enum bfd_flavour
.bfd_get_flavour (const bfd *abfd)
.{
. return abfd->xvec->flavour;
.}
.
.static inline flagword
.bfd_applicable_file_flags (const bfd *abfd)
.{
. return abfd->xvec->object_flags;
.}
.
.static inline bool
.bfd_family_coff (const bfd *abfd)
.{
. return (bfd_get_flavour (abfd) == bfd_target_coff_flavour
. || bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
.}
.
.static inline bool
.bfd_big_endian (const bfd *abfd)
.{
. return abfd->xvec->byteorder == BFD_ENDIAN_BIG;
.}
.static inline bool
.bfd_little_endian (const bfd *abfd)
.{
. return abfd->xvec->byteorder == BFD_ENDIAN_LITTLE;
.}
.
.static inline bool
.bfd_header_big_endian (const bfd *abfd)
.{
. return abfd->xvec->header_byteorder == BFD_ENDIAN_BIG;
.}
.
.static inline bool
.bfd_header_little_endian (const bfd *abfd)
.{
. return abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE;
.}
.
.static inline flagword
.bfd_applicable_section_flags (const bfd *abfd)
.{
. return abfd->xvec->section_flags;
.}
.
.static inline char
.bfd_get_symbol_leading_char (const bfd *abfd)
.{
. return abfd->xvec->symbol_leading_char;
.}
.
.static inline enum bfd_flavour
.bfd_asymbol_flavour (const asymbol *sy)
.{
. if ((sy->flags & BSF_SYNTHETIC) != 0)
. return bfd_target_unknown_flavour;
. return sy->the_bfd->xvec->flavour;
.}
.
.static inline bool
.bfd_keep_unused_section_symbols (const bfd *abfd)
.{
. return abfd->xvec->keep_unused_section_symbols;
.}
.
*/
/* All known xvecs (even those that don't compile on all systems).
Alphabetized for easy reference.
They are listed a second time below, since
we can't intermix extern's and initializers. */
extern const bfd_target aarch64_elf32_be_vec;
extern const bfd_target aarch64_elf32_le_vec;
extern const bfd_target aarch64_elf64_be_vec;
extern const bfd_target aarch64_elf64_be_cloudabi_vec;
extern const bfd_target aarch64_elf64_le_vec;
extern const bfd_target aarch64_elf64_le_cloudabi_vec;
extern const bfd_target aarch64_mach_o_vec;
extern const bfd_target aarch64_pei_le_vec;
extern const bfd_target aarch64_pe_le_vec;
extern const bfd_target alpha_ecoff_le_vec;
extern const bfd_target alpha_elf64_vec;
extern const bfd_target alpha_elf64_fbsd_vec;
extern const bfd_target alpha_vms_vec;
extern const bfd_target alpha_vms_lib_txt_vec;
extern const bfd_target am33_elf32_linux_vec;
extern const bfd_target amdgcn_elf64_le_vec;
extern const bfd_target aout_vec;
extern const bfd_target arc_elf32_be_vec;
extern const bfd_target arc_elf32_le_vec;
extern const bfd_target arm_elf32_be_vec;
extern const bfd_target arm_elf32_le_vec;
extern const bfd_target arm_elf32_fdpic_be_vec;
extern const bfd_target arm_elf32_fdpic_le_vec;
extern const bfd_target arm_elf32_nacl_be_vec;
extern const bfd_target arm_elf32_nacl_le_vec;
extern const bfd_target arm_elf32_vxworks_be_vec;
extern const bfd_target arm_elf32_vxworks_le_vec;
extern const bfd_target arm_mach_o_vec;
extern const bfd_target arm_pe_be_vec;
extern const bfd_target arm_pe_le_vec;
extern const bfd_target arm_pe_wince_be_vec;
extern const bfd_target arm_pe_wince_le_vec;
extern const bfd_target arm_pei_be_vec;
extern const bfd_target arm_pei_le_vec;
extern const bfd_target arm_pei_wince_be_vec;
extern const bfd_target arm_pei_wince_le_vec;
extern const bfd_target avr_elf32_vec;
extern const bfd_target bfin_elf32_vec;
extern const bfd_target bfin_elf32_fdpic_vec;
extern const bfd_target cr16_elf32_vec;
extern const bfd_target cris_aout_vec;
extern const bfd_target cris_elf32_vec;
extern const bfd_target cris_elf32_us_vec;
extern const bfd_target crx_elf32_vec;
extern const bfd_target csky_elf32_be_vec;
extern const bfd_target csky_elf32_le_vec;
extern const bfd_target d10v_elf32_vec;
extern const bfd_target d30v_elf32_vec;
extern const bfd_target dlx_elf32_be_vec;
extern const bfd_target elf32_be_vec;
extern const bfd_target elf32_le_vec;
extern const bfd_target elf64_be_vec;
extern const bfd_target elf64_le_vec;
extern const bfd_target bpf_elf64_le_vec;
extern const bfd_target bpf_elf64_be_vec;
extern const bfd_target epiphany_elf32_vec;
extern const bfd_target fr30_elf32_vec;
extern const bfd_target frv_elf32_vec;
extern const bfd_target frv_elf32_fdpic_vec;
extern const bfd_target h8300_elf32_vec;
extern const bfd_target h8300_elf32_linux_vec;
extern const bfd_target hppa_elf32_vec;
extern const bfd_target hppa_elf32_linux_vec;
extern const bfd_target hppa_elf32_nbsd_vec;
extern const bfd_target hppa_elf64_vec;
extern const bfd_target hppa_elf64_linux_vec;
extern const bfd_target hppa_som_vec;
extern const bfd_target i386_aout_vec;
extern const bfd_target i386_aout_bsd_vec;
extern const bfd_target i386_aout_lynx_vec;
extern const bfd_target i386_coff_vec;
extern const bfd_target i386_coff_go32_vec;
extern const bfd_target i386_coff_go32stubbed_vec;
extern const bfd_target i386_coff_lynx_vec;
extern const bfd_target i386_elf32_vec;
extern const bfd_target i386_elf32_fbsd_vec;
extern const bfd_target i386_elf32_sol2_vec;
extern const bfd_target i386_elf32_vxworks_vec;
extern const bfd_target i386_mach_o_vec;
extern const bfd_target i386_msdos_vec;
extern const bfd_target i386_pe_vec;
extern const bfd_target i386_pe_big_vec;
extern const bfd_target i386_pei_vec;
extern const bfd_target iamcu_elf32_vec;
extern const bfd_target ia64_elf32_be_vec;
extern const bfd_target ia64_elf32_hpux_be_vec;
extern const bfd_target ia64_elf64_be_vec;
extern const bfd_target ia64_elf64_le_vec;
extern const bfd_target ia64_elf64_hpux_be_vec;
extern const bfd_target ia64_elf64_vms_vec;
extern const bfd_target ia64_pei_vec;
extern const bfd_target ip2k_elf32_vec;
extern const bfd_target iq2000_elf32_vec;
extern const bfd_target kvx_elf32_vec;
extern const bfd_target kvx_elf64_vec;
extern const bfd_target lm32_elf32_vec;
extern const bfd_target lm32_elf32_fdpic_vec;
extern const bfd_target loongarch_elf64_vec;
extern const bfd_target loongarch_elf32_vec;
extern const bfd_target loongarch64_pei_vec;
extern const bfd_target m32c_elf32_vec;
extern const bfd_target m32r_elf32_vec;
extern const bfd_target m32r_elf32_le_vec;
extern const bfd_target m32r_elf32_linux_vec;
extern const bfd_target m32r_elf32_linux_le_vec;
extern const bfd_target m68hc11_elf32_vec;
extern const bfd_target m68hc12_elf32_vec;
extern const bfd_target m68k_elf32_vec;
extern const bfd_target s12z_elf32_vec;
extern const bfd_target mach_o_be_vec;
extern const bfd_target mach_o_le_vec;
extern const bfd_target mach_o_fat_vec;
extern const bfd_target mcore_elf32_be_vec;
extern const bfd_target mcore_elf32_le_vec;
extern const bfd_target mcore_pe_be_vec;
extern const bfd_target mcore_pe_le_vec;
extern const bfd_target mcore_pei_be_vec;
extern const bfd_target mcore_pei_le_vec;
extern const bfd_target mep_elf32_vec;
extern const bfd_target mep_elf32_le_vec;
extern const bfd_target metag_elf32_vec;
extern const bfd_target microblaze_elf32_vec;
extern const bfd_target microblaze_elf32_le_vec;
extern const bfd_target mips_ecoff_be_vec;
extern const bfd_target mips_ecoff_le_vec;
extern const bfd_target mips_ecoff_bele_vec;
extern const bfd_target mips_elf32_be_vec;
extern const bfd_target mips_elf32_le_vec;
extern const bfd_target mips_elf32_n_be_vec;
extern const bfd_target mips_elf32_n_le_vec;
extern const bfd_target mips_elf32_ntrad_be_vec;
extern const bfd_target mips_elf32_ntrad_le_vec;
extern const bfd_target mips_elf32_ntradfbsd_be_vec;
extern const bfd_target mips_elf32_ntradfbsd_le_vec;
extern const bfd_target mips_elf32_trad_be_vec;
extern const bfd_target mips_elf32_trad_le_vec;
extern const bfd_target mips_elf32_tradfbsd_be_vec;
extern const bfd_target mips_elf32_tradfbsd_le_vec;
extern const bfd_target mips_elf32_vxworks_be_vec;
extern const bfd_target mips_elf32_vxworks_le_vec;
extern const bfd_target mips_elf64_be_vec;
extern const bfd_target mips_elf64_le_vec;
extern const bfd_target mips_elf64_trad_be_vec;
extern const bfd_target mips_elf64_trad_le_vec;
extern const bfd_target mips_elf64_tradfbsd_be_vec;
extern const bfd_target mips_elf64_tradfbsd_le_vec;
extern const bfd_target mmix_elf64_vec;
extern const bfd_target mmix_mmo_vec;
extern const bfd_target mn10200_elf32_vec;
extern const bfd_target mn10300_elf32_vec;
extern const bfd_target moxie_elf32_be_vec;
extern const bfd_target moxie_elf32_le_vec;
extern const bfd_target msp430_elf32_vec;
extern const bfd_target msp430_elf32_ti_vec;
extern const bfd_target mt_elf32_vec;
extern const bfd_target nds32_elf32_be_vec;
extern const bfd_target nds32_elf32_le_vec;
extern const bfd_target nds32_elf32_linux_be_vec;
extern const bfd_target nds32_elf32_linux_le_vec;
extern const bfd_target nfp_elf64_vec;
extern const bfd_target nios2_elf32_be_vec;
extern const bfd_target nios2_elf32_le_vec;
extern const bfd_target ns32k_aout_pc532mach_vec;
extern const bfd_target ns32k_aout_pc532nbsd_vec;
extern const bfd_target or1k_elf32_vec;
extern const bfd_target pdb_vec;
extern const bfd_target pdp11_aout_vec;
extern const bfd_target pef_vec;
extern const bfd_target pef_xlib_vec;
extern const bfd_target pj_elf32_vec;
extern const bfd_target pj_elf32_le_vec;
extern const bfd_target plugin_vec;
extern const bfd_target powerpc_boot_vec;
extern const bfd_target powerpc_elf32_vec;
extern const bfd_target powerpc_elf32_le_vec;
extern const bfd_target powerpc_elf32_fbsd_vec;
extern const bfd_target powerpc_elf32_vxworks_vec;
extern const bfd_target powerpc_elf64_vec;
extern const bfd_target powerpc_elf64_le_vec;
extern const bfd_target powerpc_elf64_fbsd_vec;
extern const bfd_target powerpc_elf64_fbsd_le_vec;
extern const bfd_target powerpc_xcoff_vec;
extern const bfd_target pru_elf32_vec;
extern const bfd_target riscv_elf32_vec;
extern const bfd_target riscv_elf64_vec;
extern const bfd_target riscv_elf32_be_vec;
extern const bfd_target riscv_elf64_be_vec;
extern const bfd_target riscv64_pei_vec;
extern const bfd_target rl78_elf32_vec;
extern const bfd_target rs6000_xcoff64_vec;
extern const bfd_target rs6000_xcoff64_aix_vec;
extern const bfd_target rs6000_xcoff_vec;
extern const bfd_target rx_elf32_be_vec;
extern const bfd_target rx_elf32_be_ns_vec;
extern const bfd_target rx_elf32_le_vec;
extern const bfd_target rx_elf32_linux_le_vec;
extern const bfd_target s390_elf32_vec;
extern const bfd_target s390_elf64_vec;
extern const bfd_target score_elf32_be_vec;
extern const bfd_target score_elf32_le_vec;
extern const bfd_target sh_coff_vec;
extern const bfd_target sh_coff_le_vec;
extern const bfd_target sh_coff_small_vec;
extern const bfd_target sh_coff_small_le_vec;
extern const bfd_target sh_elf32_vec;
extern const bfd_target sh_elf32_le_vec;
extern const bfd_target sh_elf32_fdpic_be_vec;
extern const bfd_target sh_elf32_fdpic_le_vec;
extern const bfd_target sh_elf32_linux_vec;
extern const bfd_target sh_elf32_linux_be_vec;
extern const bfd_target sh_elf32_nbsd_vec;
extern const bfd_target sh_elf32_nbsd_le_vec;
extern const bfd_target sh_elf32_vxworks_vec;
extern const bfd_target sh_elf32_vxworks_le_vec;
extern const bfd_target sh_pe_le_vec;
extern const bfd_target sh_pei_le_vec;
extern const bfd_target sparc_elf32_vec;
extern const bfd_target sparc_elf32_sol2_vec;
extern const bfd_target sparc_elf32_vxworks_vec;
extern const bfd_target sparc_elf64_vec;
extern const bfd_target sparc_elf64_fbsd_vec;
extern const bfd_target sparc_elf64_sol2_vec;
extern const bfd_target spu_elf32_vec;
extern const bfd_target sym_vec;
extern const bfd_target tic30_coff_vec;
extern const bfd_target tic4x_coff0_vec;
extern const bfd_target tic4x_coff0_beh_vec;
extern const bfd_target tic4x_coff1_vec;
extern const bfd_target tic4x_coff1_beh_vec;
extern const bfd_target tic4x_coff2_vec;
extern const bfd_target tic4x_coff2_beh_vec;
extern const bfd_target tic54x_coff0_vec;
extern const bfd_target tic54x_coff0_beh_vec;
extern const bfd_target tic54x_coff1_vec;
extern const bfd_target tic54x_coff1_beh_vec;
extern const bfd_target tic54x_coff2_vec;
extern const bfd_target tic54x_coff2_beh_vec;
extern const bfd_target tic6x_elf32_be_vec;
extern const bfd_target tic6x_elf32_le_vec;
extern const bfd_target tic6x_elf32_c6000_be_vec;
extern const bfd_target tic6x_elf32_c6000_le_vec;
extern const bfd_target tic6x_elf32_linux_be_vec;
extern const bfd_target tic6x_elf32_linux_le_vec;
extern const bfd_target tilegx_elf32_be_vec;
extern const bfd_target tilegx_elf32_le_vec;
extern const bfd_target tilegx_elf64_be_vec;
extern const bfd_target tilegx_elf64_le_vec;
extern const bfd_target tilepro_elf32_vec;
extern const bfd_target v800_elf32_vec;
extern const bfd_target v850_elf32_vec;
extern const bfd_target ft32_elf32_vec;
extern const bfd_target vax_aout_1knbsd_vec;
extern const bfd_target vax_aout_nbsd_vec;
extern const bfd_target vax_elf32_vec;
extern const bfd_target visium_elf32_vec;
extern const bfd_target wasm_vec;
extern const bfd_target wasm32_elf32_vec;
extern const bfd_target x86_64_coff_vec;
extern const bfd_target x86_64_elf32_vec;
extern const bfd_target x86_64_elf64_vec;
extern const bfd_target x86_64_elf64_cloudabi_vec;
extern const bfd_target x86_64_elf64_fbsd_vec;
extern const bfd_target x86_64_elf64_sol2_vec;
extern const bfd_target x86_64_mach_o_vec;
extern const bfd_target x86_64_pe_vec;
extern const bfd_target x86_64_pe_big_vec;
extern const bfd_target x86_64_pei_vec;
extern const bfd_target xgate_elf32_vec;
extern const bfd_target xstormy16_elf32_vec;
extern const bfd_target xtensa_elf32_be_vec;
extern const bfd_target xtensa_elf32_le_vec;
extern const bfd_target z80_coff_vec;
extern const bfd_target z80_elf32_vec;
extern const bfd_target z8k_coff_vec;
/* These are always included. */
extern const bfd_target srec_vec;
extern const bfd_target symbolsrec_vec;
extern const bfd_target verilog_vec;
extern const bfd_target tekhex_vec;
extern const bfd_target binary_vec;
extern const bfd_target ihex_vec;
/* All of the xvecs for core files. */
extern const bfd_target core_cisco_be_vec;
extern const bfd_target core_cisco_le_vec;
extern const bfd_target core_hppabsd_vec;
extern const bfd_target core_hpux_vec;
extern const bfd_target core_irix_vec;
extern const bfd_target core_netbsd_vec;
extern const bfd_target core_osf_vec;
extern const bfd_target core_ptrace_vec;
extern const bfd_target core_trad_vec;
static const bfd_target * const _bfd_target_vector[] =
{
#ifdef SELECT_VECS
SELECT_VECS,
#else /* not SELECT_VECS */
#ifdef DEFAULT_VECTOR
&DEFAULT_VECTOR,
#endif
/* This list is alphabetized to make it easy to compare
with other vector lists -- the decls above and
the case statement in configure.ac.
Try to keep it in order when adding new targets, and
use a name of the form <cpu>_<format>_<other>_<endian>_vec.
Note that sorting is done as if _<endian>_vec wasn't present.
Vectors that don't compile on all systems, or aren't finished,
should have an entry here with #if 0 around it, to show that
it wasn't omitted by mistake. */
#ifdef BFD64
&aarch64_elf32_be_vec,
&aarch64_elf32_le_vec,
&aarch64_elf64_be_vec,
&aarch64_elf64_be_cloudabi_vec,
&aarch64_elf64_le_vec,
&aarch64_elf64_le_cloudabi_vec,
&aarch64_mach_o_vec,
&aarch64_pe_le_vec,
&aarch64_pei_le_vec,
#endif
#ifdef BFD64
&amdgcn_elf64_le_vec,
#endif
#ifdef BFD64
&alpha_ecoff_le_vec,
&alpha_elf64_vec,
&alpha_elf64_fbsd_vec,
&alpha_vms_vec,
#endif
&alpha_vms_lib_txt_vec,
&am33_elf32_linux_vec,
#if 0
/* Since a.out files lack decent magic numbers, no way to recognize
which kind of a.out file it is. */
&aout_vec,
#endif
&arc_elf32_be_vec,
&arc_elf32_le_vec,
&arm_elf32_be_vec,
&arm_elf32_le_vec,
&arm_elf32_fdpic_be_vec,
&arm_elf32_fdpic_le_vec,
&arm_elf32_vxworks_be_vec,
&arm_elf32_vxworks_le_vec,
&arm_mach_o_vec,
&arm_pe_be_vec,
&arm_pe_le_vec,
&arm_pe_wince_be_vec,
&arm_pe_wince_le_vec,
&arm_pei_be_vec,
&arm_pei_le_vec,
&arm_pei_wince_be_vec,
&arm_pei_wince_le_vec,
&avr_elf32_vec,
&bfin_elf32_vec,
&bfin_elf32_fdpic_vec,
&cr16_elf32_vec,
&cris_aout_vec,
&cris_elf32_vec,
&cris_elf32_us_vec,
&crx_elf32_vec,
&csky_elf32_be_vec,
&csky_elf32_le_vec,
&d10v_elf32_vec,
&d30v_elf32_vec,
&dlx_elf32_be_vec,
/* This, and other vectors, may not be used in any *.mt configuration.
But that does not mean they are unnecessary. If configured with
--enable-targets=all, objdump or gdb should be able to examine
the file even if we don't recognize the machine type. */
&elf32_be_vec,
&elf32_le_vec,
#ifdef BFD64
&elf64_be_vec,
&elf64_le_vec,
#endif
&epiphany_elf32_vec,
&fr30_elf32_vec,
&frv_elf32_vec,
&frv_elf32_fdpic_vec,
&h8300_elf32_vec,
&h8300_elf32_linux_vec,
&hppa_elf32_vec,
&hppa_elf32_linux_vec,
&hppa_elf32_nbsd_vec,
#ifdef BFD64
&hppa_elf64_vec,
&hppa_elf64_linux_vec,
#endif
&hppa_som_vec,
&i386_aout_vec,
&i386_aout_bsd_vec,
&i386_aout_lynx_vec,
&i386_coff_vec,
&i386_coff_go32_vec,
&i386_coff_go32stubbed_vec,
&i386_coff_lynx_vec,
&i386_elf32_vec,
&i386_elf32_fbsd_vec,
&i386_elf32_sol2_vec,
&i386_elf32_vxworks_vec,
&i386_mach_o_vec,
&i386_msdos_vec,
&i386_pe_vec,
&i386_pe_big_vec,
&i386_pei_vec,
&iamcu_elf32_vec,
#ifdef BFD64
&bpf_elf64_be_vec,
&bpf_elf64_le_vec,
#endif
#ifdef BFD64
#if 0
&ia64_elf32_be_vec,
#endif
&ia64_elf32_hpux_be_vec,
&ia64_elf64_be_vec,
&ia64_elf64_le_vec,
&ia64_elf64_hpux_be_vec,
&ia64_elf64_vms_vec,
&ia64_pei_vec,
#endif
&ip2k_elf32_vec,
&iq2000_elf32_vec,
#ifdef BFD64
&kvx_elf32_vec,
&kvx_elf64_vec,
#endif
&lm32_elf32_vec,
&m32c_elf32_vec,
&m32r_elf32_vec,
&m32r_elf32_le_vec,
&m32r_elf32_linux_vec,
&m32r_elf32_linux_le_vec,
&m68hc11_elf32_vec,
&m68hc12_elf32_vec,
&m68k_elf32_vec,
&s12z_elf32_vec,
&mach_o_be_vec,
&mach_o_le_vec,
&mach_o_fat_vec,
&mcore_elf32_be_vec,
&mcore_elf32_le_vec,
&mcore_pe_be_vec,
&mcore_pe_le_vec,
&mcore_pei_be_vec,
&mcore_pei_le_vec,
&mep_elf32_vec,
&metag_elf32_vec,
&microblaze_elf32_vec,
&mips_ecoff_be_vec,
&mips_ecoff_le_vec,
&mips_ecoff_bele_vec,
#ifdef BFD64
&mips_elf32_be_vec,
&mips_elf32_le_vec,
&mips_elf32_n_be_vec,
&mips_elf32_n_le_vec,
&mips_elf32_ntrad_be_vec,
&mips_elf32_ntrad_le_vec,
&mips_elf32_ntradfbsd_be_vec,
&mips_elf32_ntradfbsd_le_vec,
&mips_elf32_trad_be_vec,
&mips_elf32_trad_le_vec,
&mips_elf32_tradfbsd_be_vec,
&mips_elf32_tradfbsd_le_vec,
&mips_elf32_vxworks_be_vec,
&mips_elf32_vxworks_le_vec,
&mips_elf64_be_vec,
&mips_elf64_le_vec,
&mips_elf64_trad_be_vec,
&mips_elf64_trad_le_vec,
&mips_elf64_tradfbsd_be_vec,
&mips_elf64_tradfbsd_le_vec,
#endif
#ifdef BFD64
&mmix_elf64_vec,
&mmix_mmo_vec,
#endif
&mn10200_elf32_vec,
&mn10300_elf32_vec,
&moxie_elf32_be_vec,
&moxie_elf32_le_vec,
&msp430_elf32_vec,
&msp430_elf32_ti_vec,
&mt_elf32_vec,
&nds32_elf32_be_vec,
&nds32_elf32_le_vec,
&nds32_elf32_linux_be_vec,
&nds32_elf32_linux_le_vec,
#ifdef BFD64
&nfp_elf64_vec,
#endif
&nios2_elf32_be_vec,
&nios2_elf32_le_vec,
&ns32k_aout_pc532mach_vec,
&ns32k_aout_pc532nbsd_vec,
&or1k_elf32_vec,
&pdb_vec,
&pdp11_aout_vec,
&pef_vec,
&pef_xlib_vec,
&pj_elf32_vec,
&pj_elf32_le_vec,
&powerpc_boot_vec,
&powerpc_elf32_vec,
&powerpc_elf32_le_vec,
&powerpc_elf32_fbsd_vec,
&powerpc_elf32_vxworks_vec,
#ifdef BFD64
&powerpc_elf64_vec,
&powerpc_elf64_le_vec,
&powerpc_elf64_fbsd_vec,
&powerpc_elf64_fbsd_le_vec,
#endif
#if 0
/* This has the same magic number as RS/6000. */
&powerpc_xcoff_vec,
#endif
&pru_elf32_vec,
#ifdef BFD64
&riscv_elf32_vec,
&riscv_elf64_vec,
&riscv_elf32_be_vec,
&riscv_elf64_be_vec,
&riscv64_pei_vec,
#endif
&rl78_elf32_vec,
#ifdef BFD64
&rs6000_xcoff64_vec,
&rs6000_xcoff64_aix_vec,
#endif
&rs6000_xcoff_vec,
&rx_elf32_be_vec,
&rx_elf32_be_ns_vec,
&rx_elf32_le_vec,
&s390_elf32_vec,
#ifdef BFD64
&s390_elf64_vec,
#endif
#ifdef BFD64
&score_elf32_be_vec,
&score_elf32_le_vec,
#endif
&sh_coff_vec,
&sh_coff_le_vec,
&sh_coff_small_vec,
&sh_coff_small_le_vec,
&sh_elf32_vec,
&sh_elf32_le_vec,
&sh_elf32_fdpic_be_vec,
&sh_elf32_fdpic_le_vec,
&sh_elf32_linux_vec,
&sh_elf32_linux_be_vec,
&sh_elf32_nbsd_vec,
&sh_elf32_nbsd_le_vec,
&sh_elf32_vxworks_vec,
&sh_elf32_vxworks_le_vec,
&sh_pe_le_vec,
&sh_pei_le_vec,
&sparc_elf32_vec,
&sparc_elf32_sol2_vec,
&sparc_elf32_vxworks_vec,
#ifdef BFD64
&sparc_elf64_vec,
&sparc_elf64_fbsd_vec,
&sparc_elf64_sol2_vec,
#endif
&spu_elf32_vec,
&sym_vec,
&tic30_coff_vec,
&tic54x_coff0_beh_vec,
&tic54x_coff0_vec,
&tic54x_coff1_beh_vec,
&tic54x_coff1_vec,
&tic54x_coff2_beh_vec,
&tic54x_coff2_vec,
&tic6x_elf32_be_vec,
&tic6x_elf32_le_vec,
&tilegx_elf32_be_vec,
&tilegx_elf32_le_vec,
#ifdef BFD64
&tilegx_elf64_be_vec,
&tilegx_elf64_le_vec,
#endif
&tilepro_elf32_vec,
&ft32_elf32_vec,
&v800_elf32_vec,
&v850_elf32_vec,
&vax_aout_1knbsd_vec,
&vax_aout_nbsd_vec,
&vax_elf32_vec,
&visium_elf32_vec,
&wasm_vec,
&wasm32_elf32_vec,
#ifdef BFD64
&x86_64_coff_vec,
&x86_64_elf32_vec,
&x86_64_elf64_vec,
&x86_64_elf64_cloudabi_vec,
&x86_64_elf64_fbsd_vec,
&x86_64_elf64_sol2_vec,
&x86_64_mach_o_vec,
&x86_64_pe_vec,
&x86_64_pe_big_vec,
&x86_64_pei_vec,
#endif
&xgate_elf32_vec,
&xstormy16_elf32_vec,
&xtensa_elf32_be_vec,
&xtensa_elf32_le_vec,
&z80_coff_vec,
&z80_elf32_vec,
&z8k_coff_vec,
#ifdef BFD64
&loongarch_elf32_vec,
&loongarch_elf64_vec,
&loongarch64_pei_vec,
#endif
#endif /* not SELECT_VECS */
/* Always support S-records, for convenience. */
&srec_vec,
&symbolsrec_vec,
/* And verilog. */
&verilog_vec,
/* And tekhex */
&tekhex_vec,
/* Likewise for binary output. */
&binary_vec,
/* Likewise for ihex. */
&ihex_vec,
#if BFD_SUPPORTS_PLUGINS
&plugin_vec,
#endif
/* Add any required traditional-core-file-handler. */
#if 0
/* We don't include cisco_core_*_vec. Although it has a magic number,
the magic number isn't at the beginning of the file, and thus
might spuriously match other kinds of files. */
&core_cisco_be_vec,
&core_cisco_le_vec,
#endif
#ifdef HPPABSD_CORE
&core_hppabsd_vec,
#endif
#ifdef HPUX_CORE
&core_hpux_vec,
#endif
#ifdef IRIX_CORE
&core_irix_vec,
#endif
#ifdef NETBSD_CORE
&core_netbsd_vec,
#endif
#ifdef OSF_CORE
&core_osf_vec,
#endif
#ifdef PTRACE_CORE
&core_ptrace_vec,
#endif
#ifdef TRAD_CORE
&core_trad_vec,
#endif
NULL /* end of list marker */
};
const bfd_target *const *const bfd_target_vector = _bfd_target_vector;
/* bfd_default_vector[0] contains either the address of the default vector,
if there is one, or zero if there isn't. */
const bfd_target *bfd_default_vector[] = {
#ifdef DEFAULT_VECTOR
&DEFAULT_VECTOR,
#endif
NULL
};
/* bfd_associated_vector[] contains the associated target vectors used
to reduce the ambiguity in bfd_check_format_matches. */
static const bfd_target *const _bfd_associated_vector[] = {
#ifdef ASSOCIATED_VECS
ASSOCIATED_VECS,
#endif
NULL
};
const bfd_target *const *const bfd_associated_vector = _bfd_associated_vector;
/* When there is an ambiguous match, bfd_check_format_matches puts the
names of the matching targets in an array. This variable is the maximum
number of entries that the array could possibly need. */
const size_t _bfd_target_vector_entries = ARRAY_SIZE (_bfd_target_vector);
/* This array maps configuration triplets onto BFD vectors. */
struct targmatch
{
/* The configuration triplet. */
const char *triplet;
/* The BFD vector. If this is NULL, then the vector is found by
searching forward for the next structure with a non NULL vector
field. */
const bfd_target *vector;
};
/* targmatch.h is built by Makefile out of config.bfd. */
static const struct targmatch bfd_target_match[] = {
#include "targmatch.h"
{ NULL, NULL }
};
/* Find a target vector, given a name or configuration triplet. */
static const bfd_target *
find_target (const char *name)
{
const bfd_target * const *target;
const struct targmatch *match;
for (target = &bfd_target_vector[0]; *target != NULL; target++)
if (strcmp (name, (*target)->name) == 0)
return *target;
/* If we couldn't match on the exact name, try matching on the
configuration triplet. FIXME: We should run the triplet through
config.sub first, but that is hard. */
for (match = &bfd_target_match[0]; match->triplet != NULL; match++)
{
if (fnmatch (match->triplet, name, 0) == 0)
{
while (match->vector == NULL)
++match;
return match->vector;
}
}
bfd_set_error (bfd_error_invalid_target);
return NULL;
}
/*
FUNCTION
bfd_set_default_target
SYNOPSIS
bool bfd_set_default_target (const char *name);
DESCRIPTION
Set the default target vector to use when recognizing a BFD.
This takes the name of the target, which may be a BFD target
name or a configuration triplet.
*/
bool
bfd_set_default_target (const char *name)
{
const bfd_target *target;
if (bfd_default_vector[0] != NULL
&& strcmp (name, bfd_default_vector[0]->name) == 0)
return true;
target = find_target (name);
if (target == NULL)
return false;
bfd_default_vector[0] = target;
return true;
}
/*
FUNCTION
bfd_find_target
SYNOPSIS
const bfd_target *bfd_find_target (const char *target_name, bfd *abfd);
DESCRIPTION
Return a pointer to the transfer vector for the object target
named @var{target_name}. If @var{target_name} is <<NULL>>,
choose the one in the environment variable <<GNUTARGET>>; if
that is null or not defined, then choose the first entry in the
target list. Passing in the string "default" or setting the
environment variable to "default" will cause the first entry in
the target list to be returned, and "target_defaulted" will be
set in the BFD if @var{abfd} isn't <<NULL>>. This causes
<<bfd_check_format>> to loop over all the targets to find the
one that matches the file being read.
*/
const bfd_target *
bfd_find_target (const char *target_name, bfd *abfd)
{
const char *targname;
const bfd_target *target;
if (target_name != NULL)
targname = target_name;
else
targname = getenv ("GNUTARGET");
/* This is safe; the vector cannot be null. */
if (targname == NULL || strcmp (targname, "default") == 0)
{
if (bfd_default_vector[0] != NULL)
target = bfd_default_vector[0];
else
target = bfd_target_vector[0];
if (abfd)
{
abfd->xvec = target;
abfd->target_defaulted = true;
}
return target;
}
if (abfd)
abfd->target_defaulted = false;
target = find_target (targname);
if (target == NULL)
return NULL;
if (abfd)
abfd->xvec = target;
return target;
}
/* Helper function for bfd_get_target_info to determine the target's
architecture. This method handles bfd internal target names as
tuples and triplets. */
static bool
_bfd_find_arch_match (const char *tname, const char **arch,
const char **def_target_arch)
{
if (!arch)
return false;
while (*arch != NULL)
{
const char *in_a = strstr (*arch, tname);
char end_ch = (in_a ? in_a[strlen (tname)] : 0);
if (in_a && (in_a == *arch || in_a[-1] == ':')
&& end_ch == 0)
{
*def_target_arch = *arch;
return true;
}
arch++;
}
return false;
}
/*
FUNCTION
bfd_get_target_info
SYNOPSIS
const bfd_target *bfd_get_target_info (const char *target_name,
bfd *abfd,
bool *is_bigendian,
int *underscoring,
const char **def_target_arch);
DESCRIPTION
Return a pointer to the transfer vector for the object target
named @var{target_name}. If @var{target_name} is <<NULL>>,
choose the one in the environment variable <<GNUTARGET>>; if
that is null or not defined, then choose the first entry in the
target list. Passing in the string "default" or setting the
environment variable to "default" will cause the first entry in
the target list to be returned, and "target_defaulted" will be
set in the BFD if @var{abfd} isn't <<NULL>>. This causes
<<bfd_check_format>> to loop over all the targets to find the
one that matches the file being read.
If @var{is_bigendian} is not <<NULL>>, then set this value to target's
endian mode. True for big-endian, FALSE for little-endian or for
invalid target.
If @var{underscoring} is not <<NULL>>, then set this value to target's
underscoring mode. Zero for none-underscoring, -1 for invalid target,
else the value of target vector's symbol underscoring.
If @var{def_target_arch} is not <<NULL>>, then set it to the architecture
string specified by the target_name.
*/
const bfd_target *
bfd_get_target_info (const char *target_name, bfd *abfd,
bool *is_bigendian,
int *underscoring, const char **def_target_arch)
{
const bfd_target *target_vec;
if (is_bigendian)
*is_bigendian = false;
if (underscoring)
*underscoring = -1;
if (def_target_arch)
*def_target_arch = NULL;
target_vec = bfd_find_target (target_name, abfd);
if (! target_vec)
return NULL;
if (is_bigendian)
*is_bigendian = target_vec->byteorder == BFD_ENDIAN_BIG;
if (underscoring)
*underscoring = ((int) target_vec->symbol_leading_char) & 0xff;
if (def_target_arch)
{
const char *tname = target_vec->name;
const char **arches = bfd_arch_list ();
if (arches && tname)
{
char *hyp = strchr (tname, '-');
if (hyp != NULL)
{
tname = ++hyp;
/* Make sure we detect architecture names
for triplets like "pe-arm-wince-little". */
if (!_bfd_find_arch_match (tname, arches, def_target_arch))
{
char new_tname[50];
strcpy (new_tname, hyp);
while ((hyp = strrchr (new_tname, '-')) != NULL)
{
*hyp = 0;
if (_bfd_find_arch_match (new_tname, arches,
def_target_arch))
break;
}
}
}
else
_bfd_find_arch_match (tname, arches, def_target_arch);
}
free (arches);
}
return target_vec;
}
/*
FUNCTION
bfd_target_list
SYNOPSIS
const char ** bfd_target_list (void);
DESCRIPTION
Return a freshly malloced NULL-terminated
vector of the names of all the valid BFD targets. Do not
modify the names.
*/
const char **
bfd_target_list (void)
{
int vec_length = 0;
size_t amt;
const bfd_target * const *target;
const char **name_list, **name_ptr;
for (target = &bfd_target_vector[0]; *target != NULL; target++)
vec_length++;
amt = (vec_length + 1) * sizeof (char **);
name_ptr = name_list = (const char **) bfd_malloc (amt);
if (name_list == NULL)
return NULL;
for (target = &bfd_target_vector[0]; *target != NULL; target++)
if (target == &bfd_target_vector[0]
|| *target != bfd_target_vector[0])
*name_ptr++ = (*target)->name;
*name_ptr = NULL;
return name_list;
}
/*
FUNCTION
bfd_iterate_over_targets
SYNOPSIS
const bfd_target *bfd_iterate_over_targets
(int (*func) (const bfd_target *, void *),
void *data);
DESCRIPTION
Call @var{func} for each target in the list of BFD target
vectors, passing @var{data} to @var{func}. Stop iterating if
@var{func} returns a non-zero result, and return that target
vector. Return NULL if @var{func} always returns zero.
*/
const bfd_target *
bfd_iterate_over_targets (int (*func) (const bfd_target *, void *),
void *data)
{
const bfd_target *const *target;
for (target = bfd_target_vector; *target != NULL; ++target)
if (func (*target, data))
return *target;
return NULL;
}
/*
FUNCTION
bfd_flavour_name
SYNOPSIS
const char *bfd_flavour_name (enum bfd_flavour flavour);
DESCRIPTION
Return the string form of @var{flavour}.
*/
const char *
bfd_flavour_name (enum bfd_flavour flavour)
{
switch (flavour)
{
case bfd_target_unknown_flavour: return "unknown file format";
case bfd_target_aout_flavour: return "a.out";
case bfd_target_coff_flavour: return "COFF";
case bfd_target_ecoff_flavour: return "ECOFF";
case bfd_target_xcoff_flavour: return "XCOFF";
case bfd_target_elf_flavour: return "ELF";
case bfd_target_tekhex_flavour: return "Tekhex";
case bfd_target_srec_flavour: return "Srec";
case bfd_target_verilog_flavour: return "Verilog";
case bfd_target_ihex_flavour: return "Ihex";
case bfd_target_som_flavour: return "SOM";
case bfd_target_msdos_flavour: return "MSDOS";
case bfd_target_evax_flavour: return "Evax";
case bfd_target_mmo_flavour: return "mmo";
case bfd_target_mach_o_flavour: return "MACH_O";
case bfd_target_pef_flavour: return "PEF";
case bfd_target_pef_xlib_flavour: return "PEF_XLIB";
case bfd_target_sym_flavour: return "SYM";
/* There is no "default" case here so that -Wswitch (part of -Wall)
catches missing entries. */
}
abort ();
}
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