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This is bfd.info, produced by Makeinfo version 3.12f from bfd.texinfo.

START-INFO-DIR-ENTRY

* Bfd: (bfd).                   The Binary File Descriptor library.

END-INFO-DIR-ENTRY

   This file documents the BFD library.

   Copyright (C) 1991 Free Software Foundation, Inc.

   Permission is granted to make and distribute verbatim copies of this

manual provided the copyright notice and this permission notice are

preserved on all copies.

   Permission is granted to copy and distribute modified versions of

this manual under the conditions for verbatim copying, subject to the

terms of the GNU General Public License, which includes the provision

that the entire resulting derived work is distributed under the terms

of a permission notice identical to this one.

   Permission is granted to copy and distribute translations of this

manual into another language, under the above conditions for modified

versions.

File: bfd.info,  Node: bfd_target,  Prev: Targets,  Up: Targets

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 `bfd.h', and are also used when calling various routines by hand

inside the BFD implementation.  The 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

   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!

     enum bfd_flavour {

       bfd_target_unknown_flavour,

       bfd_target_aout_flavour,

       bfd_target_coff_flavour,

       bfd_target_ecoff_flavour,

       bfd_target_elf_flavour,

       bfd_target_ieee_flavour,

       bfd_target_nlm_flavour,

       bfd_target_oasys_flavour,

       bfd_target_tekhex_flavour,

       bfd_target_srec_flavour,

       bfd_target_ihex_flavour,

       bfd_target_som_flavour,

       bfd_target_os9k_flavour,

       bfd_target_versados_flavour,

       bfd_target_msdos_flavour,

       bfd_target_ovax_flavour,

       bfd_target_evax_flavour

     };

     enum bfd_endian { BFD_ENDIAN_BIG, BFD_ENDIAN_LITTLE, BFD_ENDIAN_UNKNOWN };

      /* Forward declaration.  */

     typedef struct bfd_link_info _bfd_link_info;

     typedef struct bfd_target

     {

   Identifies the kind of target, e.g., SunOS4, Ultrix, etc.

       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 short ar_max_namelen;

   Entries for byte swapping for data. These are different from the

other entry points, since they don't take a BFD asthe first argument.

Certain other handlers could do the same.

       bfd_vma      (*bfd_getx64) PARAMS ((const bfd_byte *));

       bfd_signed_vma (*bfd_getx_signed_64) PARAMS ((const bfd_byte *));

       void         (*bfd_putx64) PARAMS ((bfd_vma, bfd_byte *));

       bfd_vma      (*bfd_getx32) PARAMS ((const bfd_byte *));

       bfd_signed_vma (*bfd_getx_signed_32) PARAMS ((const bfd_byte *));

       void         (*bfd_putx32) PARAMS ((bfd_vma, bfd_byte *));

       bfd_vma      (*bfd_getx16) PARAMS ((const bfd_byte *));

       bfd_signed_vma (*bfd_getx_signed_16) PARAMS ((const bfd_byte *));

       void         (*bfd_putx16) PARAMS ((bfd_vma, bfd_byte *));

   Byte swapping for the headers

       bfd_vma      (*bfd_h_getx64) PARAMS ((const bfd_byte *));

       bfd_signed_vma (*bfd_h_getx_signed_64) PARAMS ((const bfd_byte *));

       void         (*bfd_h_putx64) PARAMS ((bfd_vma, bfd_byte *));

       bfd_vma      (*bfd_h_getx32) PARAMS ((const bfd_byte *));

       bfd_signed_vma (*bfd_h_getx_signed_32) PARAMS ((const bfd_byte *));

       void         (*bfd_h_putx32) PARAMS ((bfd_vma, bfd_byte *));

       bfd_vma      (*bfd_h_getx16) PARAMS ((const bfd_byte *));

       bfd_signed_vma (*bfd_h_getx_signed_16) PARAMS ((const bfd_byte *));

       void         (*bfd_h_putx16) PARAMS ((bfd_vma, bfd_byte *));

   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_target *' or

zero.

       const struct bfd_target *(*_bfd_check_format[bfd_type_end]) PARAMS ((bfd *));

   Set the format of a file being written.

       boolean             (*_bfd_set_format[bfd_type_end]) PARAMS ((bfd *));

   Write cached information into a file being written, at `bfd_close'.

       boolean             (*_bfd_write_contents[bfd_type_end]) PARAMS ((bfd *));

   The general target vector.  These vectors are initialized using the

BFD_JUMP_TABLE macros.

        /* Generic entry points.  */

     #define BFD_JUMP_TABLE_GENERIC(NAME)\

     CAT(NAME,_close_and_cleanup),\

     CAT(NAME,_bfd_free_cached_info),\

     CAT(NAME,_new_section_hook),\

     CAT(NAME,_get_section_contents),\

     CAT(NAME,_get_section_contents_in_window)

        /* Called when the BFD is being closed to do any necessary cleanup.  */

       boolean       (*_close_and_cleanup) PARAMS ((bfd *));

        /* Ask the BFD to free all cached information.  */

       boolean (*_bfd_free_cached_info) PARAMS ((bfd *));

        /* Called when a new section is created.  */

       boolean       (*_new_section_hook) PARAMS ((bfd *, sec_ptr));

        /* Read the contents of a section.  */

       boolean       (*_bfd_get_section_contents) PARAMS ((bfd *, sec_ptr, PTR,

                                                 file_ptr, bfd_size_type));

       boolean       (*_bfd_get_section_contents_in_window)

                               PARAMS ((bfd *, sec_ptr, bfd_window *,

                                        file_ptr, bfd_size_type));

        /* Entry points to copy private data.  */

     #define BFD_JUMP_TABLE_COPY(NAME)\

     CAT(NAME,_bfd_copy_private_bfd_data),\

     CAT(NAME,_bfd_merge_private_bfd_data),\

     CAT(NAME,_bfd_copy_private_section_data),\

     CAT(NAME,_bfd_copy_private_symbol_data),\

     CAT(NAME,_bfd_set_private_flags),\

     CAT(NAME,_bfd_print_private_bfd_data)\

        /* Called to copy BFD general private data from one object file

          to another.  */

       boolean       (*_bfd_copy_private_bfd_data) PARAMS ((bfd *, bfd *));

        /* Called to merge BFD general private data from one object file

          to a common output file when linking.  */

       boolean       (*_bfd_merge_private_bfd_data) PARAMS ((bfd *, bfd *));

        /* Called to copy BFD private section data from one object file

          to another.  */

       boolean       (*_bfd_copy_private_section_data) PARAMS ((bfd *, sec_ptr,

                                                            bfd *, sec_ptr));

        /* Called to copy BFD private symbol data from one symbol

          to another.  */

       boolean       (*_bfd_copy_private_symbol_data) PARAMS ((bfd *, asymbol *,

                                                               bfd *, asymbol *));

        /* Called to set private backend flags */

       boolean       (*_bfd_set_private_flags) PARAMS ((bfd *, flagword));

        /* Called to print private BFD data */

       boolean       (*_bfd_print_private_bfd_data) PARAMS ((bfd *, PTR));

        /* Core file entry points.  */

     #define BFD_JUMP_TABLE_CORE(NAME)\

     CAT(NAME,_core_file_failing_command),\

     CAT(NAME,_core_file_failing_signal),\

     CAT(NAME,_core_file_matches_executable_p)

       char *   (*_core_file_failing_command) PARAMS ((bfd *));

       int      (*_core_file_failing_signal) PARAMS ((bfd *));

       boolean  (*_core_file_matches_executable_p) PARAMS ((bfd *, bfd *));

        /* Archive entry points.  */

     #define BFD_JUMP_TABLE_ARCHIVE(NAME)\

     CAT(NAME,_slurp_armap),\

     CAT(NAME,_slurp_extended_name_table),\

     CAT(NAME,_construct_extended_name_table),\

     CAT(NAME,_truncate_arname),\

     CAT(NAME,_write_armap),\

     CAT(NAME,_read_ar_hdr),\

     CAT(NAME,_openr_next_archived_file),\

     CAT(NAME,_get_elt_at_index),\

     CAT(NAME,_generic_stat_arch_elt),\

     CAT(NAME,_update_armap_timestamp)

       boolean  (*_bfd_slurp_armap) PARAMS ((bfd *));

       boolean  (*_bfd_slurp_extended_name_table) PARAMS ((bfd *));

       boolean  (*_bfd_construct_extended_name_table)

                  PARAMS ((bfd *, char **, bfd_size_type *, const char **));

       void     (*_bfd_truncate_arname) PARAMS ((bfd *, CONST char *, char *));

       boolean  (*write_armap) PARAMS ((bfd *arch,

                                   unsigned int elength,

                                   struct orl *map,

                                   unsigned int orl_count,

                                   int stridx));

       PTR (*_bfd_read_ar_hdr_fn) PARAMS ((bfd *));

       bfd *    (*openr_next_archived_file) PARAMS ((bfd *arch, bfd *prev));

     #define bfd_get_elt_at_index(b,i) BFD_SEND(b, _bfd_get_elt_at_index, (b,i))

       bfd *    (*_bfd_get_elt_at_index) PARAMS ((bfd *, symindex));

       int      (*_bfd_stat_arch_elt) PARAMS ((bfd *, struct stat *));

       boolean  (*_bfd_update_armap_timestamp) PARAMS ((bfd *));

        /* Entry points used for symbols.  */

     #define BFD_JUMP_TABLE_SYMBOLS(NAME)\

     CAT(NAME,_get_symtab_upper_bound),\

     CAT(NAME,_get_symtab),\

     CAT(NAME,_make_empty_symbol),\

     CAT(NAME,_print_symbol),\

     CAT(NAME,_get_symbol_info),\

     CAT(NAME,_bfd_is_local_label_name),\

     CAT(NAME,_get_lineno),\

     CAT(NAME,_find_nearest_line),\

     CAT(NAME,_bfd_make_debug_symbol),\

     CAT(NAME,_read_minisymbols),\

     CAT(NAME,_minisymbol_to_symbol)

       long  (*_bfd_get_symtab_upper_bound) PARAMS ((bfd *));

       long  (*_bfd_canonicalize_symtab) PARAMS ((bfd *,

                                                  struct symbol_cache_entry **));

       struct symbol_cache_entry  *

                     (*_bfd_make_empty_symbol) PARAMS ((bfd *));

       void          (*_bfd_print_symbol) PARAMS ((bfd *, PTR,

                                           struct symbol_cache_entry *,

                                           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) PARAMS ((bfd *,

                                           struct symbol_cache_entry *,

                                           symbol_info *));

     #define bfd_get_symbol_info(b,p,e) BFD_SEND(b, _bfd_get_symbol_info, (b,p,e))

       boolean       (*_bfd_is_local_label_name) PARAMS ((bfd *, const char *));

       alent *    (*_get_lineno) PARAMS ((bfd *, struct symbol_cache_entry *));

       boolean    (*_bfd_find_nearest_line) PARAMS ((bfd *abfd,

                         struct sec *section, struct symbol_cache_entry **symbols,

                         bfd_vma offset, CONST char **file, CONST char **func,

                         unsigned int *line));

       /* 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) PARAMS ((

            bfd *abfd,

            void *ptr,

            unsigned long size));

     #define bfd_read_minisymbols(b, d, m, s) \

       BFD_SEND (b, _read_minisymbols, (b, d, m, s))

       long  (*_read_minisymbols) PARAMS ((bfd *, boolean, PTR *,

                                           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) PARAMS ((bfd *, boolean, const PTR,

                                                  asymbol *));

        /* Routines for relocs.  */

     #define BFD_JUMP_TABLE_RELOCS(NAME)\

     CAT(NAME,_get_reloc_upper_bound),\

     CAT(NAME,_canonicalize_reloc),\

     CAT(NAME,_bfd_reloc_type_lookup)

       long  (*_get_reloc_upper_bound) PARAMS ((bfd *, sec_ptr));

       long  (*_bfd_canonicalize_reloc) PARAMS ((bfd *, sec_ptr, arelent **,

                                                 struct symbol_cache_entry **));

        /* See documentation on reloc types.  */

       reloc_howto_type *

            (*reloc_type_lookup) PARAMS ((bfd *abfd,

                                          bfd_reloc_code_real_type code));

        /* Routines used when writing an object file.  */

     #define BFD_JUMP_TABLE_WRITE(NAME)\

     CAT(NAME,_set_arch_mach),\

     CAT(NAME,_set_section_contents)

       boolean    (*_bfd_set_arch_mach) PARAMS ((bfd *, enum bfd_architecture,

                         unsigned long));

       boolean       (*_bfd_set_section_contents) PARAMS ((bfd *, sec_ptr, PTR,

                                                 file_ptr, bfd_size_type));

        /* Routines used by the linker.  */

     #define BFD_JUMP_TABLE_LINK(NAME)\

     CAT(NAME,_sizeof_headers),\

     CAT(NAME,_bfd_get_relocated_section_contents),\

     CAT(NAME,_bfd_relax_section),\

     CAT(NAME,_bfd_link_hash_table_create),\

     CAT(NAME,_bfd_link_add_symbols),\

     CAT(NAME,_bfd_final_link),\

     CAT(NAME,_bfd_link_split_section),\

     CAT(NAME,_bfd_gc_sections)

       int        (*_bfd_sizeof_headers) PARAMS ((bfd *, boolean));

       bfd_byte * (*_bfd_get_relocated_section_contents) PARAMS ((bfd *,

                         struct bfd_link_info *, struct bfd_link_order *,

                         bfd_byte *data, boolean relocateable,

                         struct symbol_cache_entry **));

       boolean    (*_bfd_relax_section) PARAMS ((bfd *, struct sec *,

                         struct bfd_link_info *, boolean *again));

        /* 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) PARAMS ((bfd *));

        /* Add symbols from this object file into the hash table.  */

       boolean (*_bfd_link_add_symbols) PARAMS ((bfd *, struct bfd_link_info *));

        /* Do a link based on the link_order structures attached to each

          section of the BFD.  */

       boolean (*_bfd_final_link) PARAMS ((bfd *, struct bfd_link_info *));

        /* Should this section be split up into smaller pieces during linking.  */

       boolean (*_bfd_link_split_section) PARAMS ((bfd *, struct sec *));

        /* Remove sections that are not referenced from the output.  */

       boolean (*_bfd_gc_sections) PARAMS ((bfd *, struct bfd_link_info *));

        /* Routines to handle dynamic symbols and relocs.  */

     #define BFD_JUMP_TABLE_DYNAMIC(NAME)\

     CAT(NAME,_get_dynamic_symtab_upper_bound),\

     CAT(NAME,_canonicalize_dynamic_symtab),\

     CAT(NAME,_get_dynamic_reloc_upper_bound),\

     CAT(NAME,_canonicalize_dynamic_reloc)

        /* Get the amount of memory required to hold the dynamic symbols. */

       long  (*_bfd_get_dynamic_symtab_upper_bound) PARAMS ((bfd *));

        /* Read in the dynamic symbols.  */

       long  (*_bfd_canonicalize_dynamic_symtab)

         PARAMS ((bfd *, struct symbol_cache_entry **));

        /* Get the amount of memory required to hold the dynamic relocs.  */

       long  (*_bfd_get_dynamic_reloc_upper_bound) PARAMS ((bfd *));

        /* Read in the dynamic relocs.  */

       long  (*_bfd_canonicalize_dynamic_reloc)

         PARAMS ((bfd *, arelent **, struct symbol_cache_entry **));

   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.

      PTR backend_data;

     } bfd_target;

`bfd_set_default_target'

........................

   *Synopsis*

     boolean 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.

`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

TARGET_NAME.  If 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.  This causes

`bfd_check_format' to loop over all the targets to find the one that

matches the file being read.

`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.

`bfd_seach_for_target'

......................

   *Synopsis*

     const bfd_target * bfd_search_for_target (int (* search_func)(const bfd_target *, void *), void *);

   *Description*

Return a pointer to the first transfer vector in the list of transfer

vectors maintained by BFD that produces a non-zero result when passed

to the function SEARCH_FUNC.  The parameter DATA is passed, unexamined,

to the search function.

File: bfd.info,  Node: Architectures,  Next: Opening and Closing,  Prev: Targets,  Up: BFD front end

Architectures

=============

   BFD keeps one atom in a BFD describing the architecture of the data

attached to the BFD: a pointer to a `bfd_arch_info_type'.

   Pointers to structures can be requested independently of a BFD so

that an architecture's information can be interrogated without access

to an open BFD.

   The architecture information is provided by each architecture

package.  The set of default architectures is selected by the macro

`SELECT_ARCHITECTURES'.  This is normally set up in the

`config/TARGET.mt' file of your choice.  If the name is not defined,

then all the architectures supported are included.

   When BFD starts up, all the architectures are called with an

initialize method.  It is up to the architecture back end to insert as

many items into the list of architectures as it wants to; generally

this would be one for each machine and one for the default case (an

item with a machine field of 0).

   BFD's idea of an architecture is implemented in `archures.c'.

bfd_architecture

----------------

   *Description*

This enum gives the object file's CPU architecture, in a global

sense--i.e., what processor family does it belong to?  Another field

indicates which processor within the family is in use.  The machine

gives a number which distinguishes different versions of the

architecture, containing, for example, 2 and 3 for Intel i960 KA and

i960 KB, and 68020 and 68030 for Motorola 68020 and 68030.

     enum bfd_architecture

     {

       bfd_arch_unknown,    /* File arch not known */

       bfd_arch_obscure,    /* Arch known, not one of these */

       bfd_arch_m68k,       /* Motorola 68xxx */

     #define bfd_mach_m68000 1

     #define bfd_mach_m68008 2

     #define bfd_mach_m68010 3

     #define bfd_mach_m68020 4

     #define bfd_mach_m68030 5

     #define bfd_mach_m68040 6

     #define bfd_mach_m68060 7

     #define bfd_mach_cpu32  8

       bfd_arch_vax,        /* DEC Vax */

       bfd_arch_i960,       /* Intel 960 */

          /* The order of the following is important.

            lower number indicates a machine type that

            only accepts a subset of the instructions

            available to machines with higher numbers.

            The exception is the "ca", which is

            incompatible with all other machines except

            "core". */

     #define bfd_mach_i960_core      1

     #define bfd_mach_i960_ka_sa     2

     #define bfd_mach_i960_kb_sb     3

     #define bfd_mach_i960_mc        4

     #define bfd_mach_i960_xa        5

     #define bfd_mach_i960_ca        6

     #define bfd_mach_i960_jx        7

     #define bfd_mach_i960_hx        8

       bfd_arch_a29k,       /* AMD 29000 */

       bfd_arch_sparc,      /* SPARC */

     #define bfd_mach_sparc                 1

      /* The difference between v8plus and v9 is that v9 is a true 64 bit env.  */

     #define bfd_mach_sparc_sparclet        2

     #define bfd_mach_sparc_sparclite       3

     #define bfd_mach_sparc_v8plus          4

     #define bfd_mach_sparc_v8plusa         5  /* with ultrasparc add'ns */

     #define bfd_mach_sparc_sparclite_le    6

     #define bfd_mach_sparc_v9              7

     #define bfd_mach_sparc_v9a             8  /* with ultrasparc add'ns */

      /* Nonzero if MACH has the v9 instruction set.  */

     #define bfd_mach_sparc_v9_p(mach) \

       ((mach) >= bfd_mach_sparc_v8plus && (mach) <= bfd_mach_sparc_v9a)

       bfd_arch_mips,       /* MIPS Rxxxx */

     #define bfd_mach_mips3000              3000

     #define bfd_mach_mips3900              3900

     #define bfd_mach_mips4000              4000

     #define bfd_mach_mips4010              4010

     #define bfd_mach_mips4100              4100

     #define bfd_mach_mips4111              4111

     #define bfd_mach_mips4300              4300

     #define bfd_mach_mips4400              4400

     #define bfd_mach_mips4600              4600

     #define bfd_mach_mips4650              4650

     #define bfd_mach_mips5000              5000

     #define bfd_mach_mips6000              6000

     #define bfd_mach_mips8000              8000

     #define bfd_mach_mips10000             10000

     #define bfd_mach_mips16                16

       bfd_arch_i386,       /* Intel 386 */

     #define bfd_mach_i386_i386 0

     #define bfd_mach_i386_i8086 1

     #define bfd_mach_i386_i386_intel_syntax 2

       bfd_arch_we32k,      /* AT&T WE32xxx */

       bfd_arch_tahoe,      /* CCI/Harris Tahoe */

       bfd_arch_i860,       /* Intel 860 */

       bfd_arch_i370,       /* IBM 360/370 Mainframes */

       bfd_arch_romp,       /* IBM ROMP PC/RT */

       bfd_arch_alliant,    /* Alliant */

       bfd_arch_convex,     /* Convex */

       bfd_arch_m88k,       /* Motorola 88xxx */

       bfd_arch_pyramid,    /* Pyramid Technology */

       bfd_arch_h8300,      /* Hitachi H8/300 */

     #define bfd_mach_h8300   1

     #define bfd_mach_h8300h  2

     #define bfd_mach_h8300s  3

       bfd_arch_powerpc,    /* PowerPC */

       bfd_arch_rs6000,     /* IBM RS/6000 */

       bfd_arch_hppa,       /* HP PA RISC */

       bfd_arch_d10v,       /* Mitsubishi D10V */

     #define bfd_mach_d10v          0

     #define bfd_mach_d10v_ts2      2

     #define bfd_mach_d10v_ts3      3

       bfd_arch_d30v,       /* Mitsubishi D30V */

       bfd_arch_z8k,        /* Zilog Z8000 */

     #define bfd_mach_z8001         1

     #define bfd_mach_z8002         2

       bfd_arch_h8500,      /* Hitachi H8/500 */

       bfd_arch_sh,         /* Hitachi SH */

     #define bfd_mach_sh            0

     #define bfd_mach_sh2        0x20

     #define bfd_mach_sh_dsp     0x2d

     #define bfd_mach_sh3        0x30

     #define bfd_mach_sh3_dsp    0x3d

     #define bfd_mach_sh3e       0x3e

     #define bfd_mach_sh4        0x40

       bfd_arch_alpha,      /* Dec Alpha */

     #define bfd_mach_alpha_ev4  0x10

     #define bfd_mach_alpha_ev5  0x20

     #define bfd_mach_alpha_ev6  0x30

       bfd_arch_arm,        /* Advanced Risc Machines ARM */

     #define bfd_mach_arm_2         1

     #define bfd_mach_arm_2a        2

     #define bfd_mach_arm_3         3

     #define bfd_mach_arm_3M        4

     #define bfd_mach_arm_4         5

     #define bfd_mach_arm_4T        6

     #define bfd_mach_arm_5         7

     #define bfd_mach_arm_5T        8

       bfd_arch_ns32k,      /* National Semiconductors ns32000 */

       bfd_arch_w65,        /* WDC 65816 */

       bfd_arch_tic30,      /* Texas Instruments TMS320C30 */

       bfd_arch_tic54x,     /* Texas Instruments TMS320C54X */

       bfd_arch_tic80,      /* TI TMS320c80 (MVP) */

       bfd_arch_v850,       /* NEC V850 */

     #define bfd_mach_v850          0

     #define bfd_mach_v850e         'E'

     #define bfd_mach_v850ea        'A'

       bfd_arch_arc,        /* Argonaut RISC Core */

     #define bfd_mach_arc_base 0

       bfd_arch_m32r,       /* Mitsubishi M32R/D */

     #define bfd_mach_m32r          0  /* backwards compatibility */

     #define bfd_mach_m32rx         'x'

       bfd_arch_mn10200,    /* Matsushita MN10200 */

       bfd_arch_mn10300,    /* Matsushita MN10300 */

     #define bfd_mach_mn10300               300

     #define bfd_mach_am33          330

       bfd_arch_fr30,

     #define bfd_mach_fr30          0x46523330

       bfd_arch_mcore,

       bfd_arch_pj,

       bfd_arch_avr,        /* Atmel AVR microcontrollers */

     #define bfd_mach_avr1          1

     #define bfd_mach_avr2          2

     #define bfd_mach_avr3          3

     #define bfd_mach_avr4          4

       bfd_arch_last

       };

bfd_arch_info

-------------

   *Description*

This structure contains information on architectures for use within BFD.

     typedef struct bfd_arch_info

     {

       int bits_per_word;

       int bits_per_address;

       int bits_per_byte;

       enum bfd_architecture arch;

       unsigned long mach;

       const char *arch_name;

       const char *printable_name;

       unsigned int section_align_power;

       /* true if this is the default machine for the architecture */

       boolean the_default;

       const struct bfd_arch_info * (*compatible)

            PARAMS ((const struct bfd_arch_info *a,

                     const struct bfd_arch_info *b));

       boolean (*scan) PARAMS ((const struct bfd_arch_info *, const char *));

       const struct bfd_arch_info *next;

     } bfd_arch_info_type;

`bfd_printable_name'

....................

   *Synopsis*

     const char *bfd_printable_name(bfd *abfd);

   *Description*

Return a printable string representing the architecture and machine

from the pointer to the architecture info structure.

`bfd_scan_arch'

...............

   *Synopsis*

     const bfd_arch_info_type *bfd_scan_arch(const char *string);

   *Description*

Figure out if BFD supports any cpu which could be described with the

name STRING.  Return a pointer to an `arch_info' structure if a machine

is found, otherwise NULL.

`bfd_arch_list'

...............

   *Synopsis*

     const char **bfd_arch_list(void);

   *Description*

Return a freshly malloced NULL-terminated vector of the names of all

the valid BFD architectures.  Do not modify the names.

`bfd_arch_get_compatible'

.........................

   *Synopsis*

     const bfd_arch_info_type *bfd_arch_get_compatible(

         const bfd *abfd,

         const bfd *bbfd);

   *Description*

Determine whether two BFDs' architectures and machine types are

compatible.  Calculates the lowest common denominator between the two

architectures and machine types implied by the BFDs and returns a

pointer to an `arch_info' structure describing the compatible machine.

`bfd_default_arch_struct'

.........................

   *Description*

The `bfd_default_arch_struct' is an item of `bfd_arch_info_type' which

has been initialized to a fairly generic state.  A BFD starts life by

pointing to this structure, until the correct back end has determined

the real architecture of the file.

     extern const bfd_arch_info_type bfd_default_arch_struct;

`bfd_set_arch_info'

...................

   *Synopsis*

     void bfd_set_arch_info(bfd *abfd, const bfd_arch_info_type *arg);

   *Description*

Set the architecture info of ABFD to ARG.

`bfd_default_set_arch_mach'

...........................

   *Synopsis*

     boolean bfd_default_set_arch_mach(bfd *abfd,

         enum bfd_architecture arch,

         unsigned long mach);

   *Description*

Set the architecture and machine type in BFD ABFD to ARCH and MACH.

Find the correct pointer to a structure and insert it into the

`arch_info' pointer.

`bfd_get_arch'

..............

   *Synopsis*

     enum bfd_architecture bfd_get_arch(bfd *abfd);

   *Description*

Return the enumerated type which describes the BFD ABFD's architecture.

`bfd_get_mach'

..............

   *Synopsis*

     unsigned long bfd_get_mach(bfd *abfd);

   *Description*

Return the long type which describes the BFD ABFD's machine.

`bfd_arch_bits_per_byte'

........................

   *Synopsis*

     unsigned int bfd_arch_bits_per_byte(bfd *abfd);

   *Description*

Return the number of bits in one of the BFD ABFD's architecture's bytes.

`bfd_arch_bits_per_address'

...........................

   *Synopsis*

     unsigned int bfd_arch_bits_per_address(bfd *abfd);

   *Description*

Return the number of bits in one of the BFD ABFD's architecture's

addresses.

`bfd_default_compatible'

........................

   *Synopsis*

     const bfd_arch_info_type *bfd_default_compatible

        (const bfd_arch_info_type *a,

         const bfd_arch_info_type *b);

   *Description*

The default function for testing for compatibility.

`bfd_default_scan'

..................

   *Synopsis*

     boolean bfd_default_scan(const struct bfd_arch_info *info, const char *string);

   *Description*

The default function for working out whether this is an architecture

hit and a machine hit.

`bfd_get_arch_info'

...................

   *Synopsis*

     const bfd_arch_info_type * bfd_get_arch_info(bfd *abfd);

   *Description*

Return the architecture info struct in ABFD.

`bfd_lookup_arch'

.................

   *Synopsis*

     const bfd_arch_info_type *bfd_lookup_arch

        (enum bfd_architecture

         arch,

         unsigned long machine);

   *Description*

Look for the architecure info structure which matches the arguments

ARCH and MACHINE. A machine of 0 matches the machine/architecture

structure which marks itself as the default.

`bfd_printable_arch_mach'

.........................

   *Synopsis*

     const char *bfd_printable_arch_mach

        (enum bfd_architecture arch, unsigned long machine);

   *Description*

Return a printable string representing the architecture and machine

type.

   This routine is depreciated.

`bfd_octets_per_byte'

.....................

   *Synopsis*

     unsigned int bfd_octets_per_byte(bfd *abfd);

   *Description*

Return the number of octets (8-bit quantities) per target byte (minimum

addressable unit).  In most cases, this will be one, but some DSP

targets have 16, 32, or even 48 bits per byte.

`bfd_arch_mach_octets_per_byte'

...............................

   *Synopsis*

     unsigned int bfd_arch_mach_octets_per_byte(enum bfd_architecture arch,

         unsigned long machine);

   *Description*

See bfd_octets_per_byte.  This routine is provided for those cases

where a bfd * is not available

File: bfd.info,  Node: Opening and Closing,  Next: Internal,  Prev: Architectures,  Up: BFD front end

Opening and closing BFDs

========================

`bfd_openr'

...........

   *Synopsis*

     bfd *bfd_openr(CONST char *filename, CONST char *target);

   *Description*

Open the file FILENAME (using `fopen') with the target TARGET.  Return

a pointer to the created BFD.

   Calls `bfd_find_target', so TARGET is interpreted as by that

function.

   If `NULL' is returned then an error has occured.   Possible errors

are `bfd_error_no_memory', `bfd_error_invalid_target' or `system_call'

error.

`bfd_fdopenr'

.............

   *Synopsis*

     bfd *bfd_fdopenr(CONST char *filename, CONST char *target, int fd);

   *Description*

`bfd_fdopenr' is to `bfd_fopenr' much like `fdopen' is to `fopen'.  It

opens a BFD on a file already described by the FD supplied.

   When the file is later `bfd_close'd, the file descriptor will be

closed.

   If the caller desires that this file descriptor be cached by BFD

(opened as needed, closed as needed to free descriptors for other

opens), with the supplied FD used as an initial file descriptor (but

subject to closure at any time), call bfd_set_cacheable(bfd, 1) on the

returned BFD.  The default is to assume no cacheing; the file

descriptor will remain open until `bfd_close', and will not be affected

by BFD operations on other files.

   Possible errors are `bfd_error_no_memory',

`bfd_error_invalid_target' and `bfd_error_system_call'.

`bfd_openstreamr'

.................

   *Synopsis*

     bfd *bfd_openstreamr(const char *, const char *, PTR);

   *Description*

Open a BFD for read access on an existing stdio stream.  When the BFD

is passed to `bfd_close', the stream will be closed.

`bfd_openw'

...........

   *Synopsis*

     bfd *bfd_openw(CONST char *filename, CONST char *target);

   *Description*

Create a BFD, associated with file FILENAME, using the file format

TARGET, and return a pointer to it.

   Possible errors are `bfd_error_system_call', `bfd_error_no_memory',

`bfd_error_invalid_target'.

`bfd_close'

...........

   *Synopsis*

     boolean bfd_close(bfd *abfd);

   *Description*

Close a BFD. If the BFD was open for writing, then pending operations

are completed and the file written out and closed. If the created file

is executable, then `chmod' is called to mark it as such.

   All memory attached to the BFD is released.

   The file descriptor associated with the BFD is closed (even if it

was passed in to BFD by `bfd_fdopenr').

   *Returns*

`true' is returned if all is ok, otherwise `false'.

`bfd_close_all_done'

....................

   *Synopsis*

     boolean bfd_close_all_done(bfd *);

   *Description*

Close a BFD.  Differs from `bfd_close' since it does not complete any

pending operations.  This routine would be used if the application had

just used BFD for swapping and didn't want to use any of the writing

code.

   If the created file is executable, then `chmod' is called to mark it

as such.

   All memory attached to the BFD is released.

   *Returns*

`true' is returned if all is ok, otherwise `false'.

`bfd_create'

............

   *Synopsis*

     bfd *bfd_create(CONST char *filename, bfd *templ);

   *Description*

Create a new BFD in the manner of `bfd_openw', but without opening a

file. The new BFD takes the target from the target used by TEMPLATE. The

format is always set to `bfd_object'.

`bfd_make_writable'

...................

   *Synopsis*

     boolean bfd_make_writable(bfd *abfd);

   *Description*

Takes a BFD as created by `bfd_create' and converts it into one like as

returned by `bfd_openw'.  It does this by converting the BFD to

BFD_IN_MEMORY.  It's assumed that you will call `bfd_make_readable' on

this bfd later.

   *Returns*

`true' is returned if all is ok, otherwise `false'.

`bfd_make_readable'

...................

   *Synopsis*

     boolean bfd_make_readable(bfd *abfd);