734 lines
26 KiB
Text
734 lines
26 KiB
Text
@section Targets
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@strong{Description}@*
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Each port of BFD to a different machine requires the creation
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of a target back end. All the back end provides to the root
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part of BFD is a structure containing pointers to functions
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which perform certain low level operations on files. BFD
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translates the applications's requests through a pointer into
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calls to the back end routines.
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When a file is opened with @code{bfd_openr}, its format and
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target are unknown. BFD uses various mechanisms to determine
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how to interpret the file. The operations performed are:
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@itemize @bullet
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@item
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Create a BFD by calling the internal routine
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@code{_bfd_new_bfd}, then call @code{bfd_find_target} with the
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target string supplied to @code{bfd_openr} and the new BFD pointer.
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@item
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If a null target string was provided to @code{bfd_find_target},
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look up the environment variable @code{GNUTARGET} and use
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that as the target string.
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@item
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If the target string is still @code{NULL}, or the target string is
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@code{default}, then use the first item in the target vector
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as the target type, and set @code{target_defaulted} in the BFD to
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cause @code{bfd_check_format} to loop through all the targets.
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@xref{bfd_target}. @xref{Formats}.
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@item
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Otherwise, inspect the elements in the target vector
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one by one, until a match on target name is found. When found,
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use it.
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@item
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Otherwise return the error @code{bfd_error_invalid_target} to
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@code{bfd_openr}.
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@item
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@code{bfd_openr} attempts to open the file using
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@code{bfd_open_file}, and returns the BFD.
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@end itemize
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Once the BFD has been opened and the target selected, the file
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format may be determined. This is done by calling
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@code{bfd_check_format} on the BFD with a suggested format.
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If @code{target_defaulted} has been set, each possible target
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type is tried to see if it recognizes the specified format.
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@code{bfd_check_format} returns @code{TRUE} when the caller guesses right.
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@menu
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* bfd_target::
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@end menu
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@node bfd_target, , Targets, Targets
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@subsection bfd_target
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@strong{Description}@*
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This structure contains everything that BFD knows about a
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target. It includes things like its byte order, name, and which
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routines to call to do various operations.
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Every BFD points to a target structure with its @code{xvec}
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member.
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The macros below are used to dispatch to functions through the
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@code{bfd_target} vector. They are used in a number of macros further
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down in @file{bfd.h}, and are also used when calling various
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routines by hand inside the BFD implementation. The @var{arglist}
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argument must be parenthesized; it contains all the arguments
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to the called function.
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They make the documentation (more) unpleasant to read, so if
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someone wants to fix this and not break the above, please do.
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@example
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#define BFD_SEND(bfd, message, arglist) \
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((*((bfd)->xvec->message)) arglist)
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#ifdef DEBUG_BFD_SEND
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#undef BFD_SEND
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#define BFD_SEND(bfd, message, arglist) \
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(((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \
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((*((bfd)->xvec->message)) arglist) : \
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(bfd_assert (__FILE__,__LINE__), NULL))
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#endif
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@end example
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For operations which index on the BFD format:
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@example
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#define BFD_SEND_FMT(bfd, message, arglist) \
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(((bfd)->xvec->message[(int) ((bfd)->format)]) arglist)
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#ifdef DEBUG_BFD_SEND
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#undef BFD_SEND_FMT
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#define BFD_SEND_FMT(bfd, message, arglist) \
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(((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \
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(((bfd)->xvec->message[(int) ((bfd)->format)]) arglist) : \
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(bfd_assert (__FILE__,__LINE__), NULL))
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#endif
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/* Defined to TRUE if unused section symbol should be kept. */
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#ifndef TARGET_KEEP_UNUSED_SECTION_SYMBOLS
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#define TARGET_KEEP_UNUSED_SECTION_SYMBOLS true
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#endif
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@end example
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This is the structure which defines the type of BFD this is. The
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@code{xvec} member of the struct @code{bfd} itself points here. Each
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module that implements access to a different target under BFD,
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defines one of these.
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FIXME, these names should be rationalised with the names of
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the entry points which call them. Too bad we can't have one
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macro to define them both!
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@example
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enum bfd_flavour
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@{
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/* N.B. Update bfd_flavour_name if you change this. */
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bfd_target_unknown_flavour,
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bfd_target_aout_flavour,
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bfd_target_coff_flavour,
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bfd_target_ecoff_flavour,
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bfd_target_xcoff_flavour,
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bfd_target_elf_flavour,
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bfd_target_tekhex_flavour,
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bfd_target_srec_flavour,
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bfd_target_verilog_flavour,
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bfd_target_ihex_flavour,
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bfd_target_som_flavour,
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bfd_target_os9k_flavour,
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bfd_target_versados_flavour,
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bfd_target_msdos_flavour,
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bfd_target_ovax_flavour,
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bfd_target_evax_flavour,
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bfd_target_mmo_flavour,
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bfd_target_mach_o_flavour,
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bfd_target_pef_flavour,
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bfd_target_pef_xlib_flavour,
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bfd_target_sym_flavour
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@};
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enum bfd_endian @{ BFD_ENDIAN_BIG, BFD_ENDIAN_LITTLE, BFD_ENDIAN_UNKNOWN @};
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/* Forward declaration. */
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typedef struct bfd_link_info _bfd_link_info;
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/* Forward declaration. */
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typedef struct flag_info flag_info;
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typedef void (*bfd_cleanup) (bfd *);
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typedef struct bfd_target
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@{
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/* Identifies the kind of target, e.g., SunOS4, Ultrix, etc. */
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const char *name;
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/* The "flavour" of a back end is a general indication about
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the contents of a file. */
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enum bfd_flavour flavour;
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/* The order of bytes within the data area of a file. */
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enum bfd_endian byteorder;
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/* The order of bytes within the header parts of a file. */
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enum bfd_endian header_byteorder;
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/* A mask of all the flags which an executable may have set -
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from the set @code{BFD_NO_FLAGS}, @code{HAS_RELOC}, ...@code{D_PAGED}. */
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flagword object_flags;
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/* A mask of all the flags which a section may have set - from
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the set @code{SEC_NO_FLAGS}, @code{SEC_ALLOC}, ...@code{SET_NEVER_LOAD}. */
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flagword section_flags;
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/* The character normally found at the front of a symbol.
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(if any), perhaps `_'. */
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char symbol_leading_char;
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/* The pad character for file names within an archive header. */
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char ar_pad_char;
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/* The maximum number of characters in an archive header. */
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unsigned char ar_max_namelen;
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/* How well this target matches, used to select between various
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possible targets when more than one target matches. */
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unsigned char match_priority;
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/* TRUE if unused section symbols should be kept. */
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bool keep_unused_section_symbols;
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/* Entries for byte swapping for data. These are different from the
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other entry points, since they don't take a BFD as the first argument.
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Certain other handlers could do the same. */
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bfd_uint64_t (*bfd_getx64) (const void *);
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bfd_int64_t (*bfd_getx_signed_64) (const void *);
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void (*bfd_putx64) (bfd_uint64_t, void *);
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bfd_vma (*bfd_getx32) (const void *);
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bfd_signed_vma (*bfd_getx_signed_32) (const void *);
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void (*bfd_putx32) (bfd_vma, void *);
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bfd_vma (*bfd_getx16) (const void *);
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bfd_signed_vma (*bfd_getx_signed_16) (const void *);
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void (*bfd_putx16) (bfd_vma, void *);
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/* Byte swapping for the headers. */
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bfd_uint64_t (*bfd_h_getx64) (const void *);
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bfd_int64_t (*bfd_h_getx_signed_64) (const void *);
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void (*bfd_h_putx64) (bfd_uint64_t, void *);
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bfd_vma (*bfd_h_getx32) (const void *);
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bfd_signed_vma (*bfd_h_getx_signed_32) (const void *);
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void (*bfd_h_putx32) (bfd_vma, void *);
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bfd_vma (*bfd_h_getx16) (const void *);
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bfd_signed_vma (*bfd_h_getx_signed_16) (const void *);
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void (*bfd_h_putx16) (bfd_vma, void *);
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/* Format dependent routines: these are vectors of entry points
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within the target vector structure, one for each format to check. */
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/* Check the format of a file being read. Return a @code{bfd_cleanup} on
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success or zero on failure. */
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bfd_cleanup (*_bfd_check_format[bfd_type_end]) (bfd *);
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/* Set the format of a file being written. */
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bool (*_bfd_set_format[bfd_type_end]) (bfd *);
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/* Write cached information into a file being written, at @code{bfd_close}. */
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bool (*_bfd_write_contents[bfd_type_end]) (bfd *);
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@end example
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The general target vector. These vectors are initialized using the
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BFD_JUMP_TABLE macros.
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@example
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/* Generic entry points. */
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#define BFD_JUMP_TABLE_GENERIC(NAME) \
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NAME##_close_and_cleanup, \
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NAME##_bfd_free_cached_info, \
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NAME##_new_section_hook, \
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NAME##_get_section_contents, \
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NAME##_get_section_contents_in_window
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/* Called when the BFD is being closed to do any necessary cleanup. */
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bool (*_close_and_cleanup) (bfd *);
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/* Ask the BFD to free all cached information. */
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bool (*_bfd_free_cached_info) (bfd *);
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/* Called when a new section is created. */
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bool (*_new_section_hook) (bfd *, sec_ptr);
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/* Read the contents of a section. */
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bool (*_bfd_get_section_contents) (bfd *, sec_ptr, void *, file_ptr,
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bfd_size_type);
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bool (*_bfd_get_section_contents_in_window) (bfd *, sec_ptr, bfd_window *,
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file_ptr, bfd_size_type);
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/* Entry points to copy private data. */
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#define BFD_JUMP_TABLE_COPY(NAME) \
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NAME##_bfd_copy_private_bfd_data, \
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NAME##_bfd_merge_private_bfd_data, \
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_bfd_generic_init_private_section_data, \
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NAME##_bfd_copy_private_section_data, \
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NAME##_bfd_copy_private_symbol_data, \
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NAME##_bfd_copy_private_header_data, \
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NAME##_bfd_set_private_flags, \
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NAME##_bfd_print_private_bfd_data
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/* Called to copy BFD general private data from one object file
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to another. */
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bool (*_bfd_copy_private_bfd_data) (bfd *, bfd *);
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/* Called to merge BFD general private data from one object file
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to a common output file when linking. */
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bool (*_bfd_merge_private_bfd_data) (bfd *, struct bfd_link_info *);
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/* Called to initialize BFD private section data from one object file
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to another. */
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#define bfd_init_private_section_data(ibfd, isec, obfd, osec, link_info) \
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BFD_SEND (obfd, _bfd_init_private_section_data, \
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(ibfd, isec, obfd, osec, link_info))
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bool (*_bfd_init_private_section_data) (bfd *, sec_ptr, bfd *, sec_ptr,
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struct bfd_link_info *);
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/* Called to copy BFD private section data from one object file
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to another. */
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bool (*_bfd_copy_private_section_data) (bfd *, sec_ptr, bfd *, sec_ptr);
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/* Called to copy BFD private symbol data from one symbol
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to another. */
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bool (*_bfd_copy_private_symbol_data) (bfd *, asymbol *,
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bfd *, asymbol *);
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/* Called to copy BFD private header data from one object file
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to another. */
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bool (*_bfd_copy_private_header_data) (bfd *, bfd *);
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/* Called to set private backend flags. */
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bool (*_bfd_set_private_flags) (bfd *, flagword);
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/* Called to print private BFD data. */
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bool (*_bfd_print_private_bfd_data) (bfd *, void *);
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/* Core file entry points. */
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#define BFD_JUMP_TABLE_CORE(NAME) \
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NAME##_core_file_failing_command, \
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NAME##_core_file_failing_signal, \
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NAME##_core_file_matches_executable_p, \
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NAME##_core_file_pid
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char *(*_core_file_failing_command) (bfd *);
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int (*_core_file_failing_signal) (bfd *);
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bool (*_core_file_matches_executable_p) (bfd *, bfd *);
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int (*_core_file_pid) (bfd *);
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/* Archive entry points. */
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#define BFD_JUMP_TABLE_ARCHIVE(NAME) \
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NAME##_slurp_armap, \
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NAME##_slurp_extended_name_table, \
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NAME##_construct_extended_name_table, \
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NAME##_truncate_arname, \
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NAME##_write_armap, \
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NAME##_read_ar_hdr, \
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NAME##_write_ar_hdr, \
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NAME##_openr_next_archived_file, \
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NAME##_get_elt_at_index, \
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NAME##_generic_stat_arch_elt, \
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NAME##_update_armap_timestamp
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bool (*_bfd_slurp_armap) (bfd *);
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bool (*_bfd_slurp_extended_name_table) (bfd *);
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bool (*_bfd_construct_extended_name_table) (bfd *, char **,
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bfd_size_type *,
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const char **);
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void (*_bfd_truncate_arname) (bfd *, const char *, char *);
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bool (*write_armap) (bfd *, unsigned, struct orl *, unsigned, int);
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void *(*_bfd_read_ar_hdr_fn) (bfd *);
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bool (*_bfd_write_ar_hdr_fn) (bfd *, bfd *);
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bfd *(*openr_next_archived_file) (bfd *, bfd *);
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#define bfd_get_elt_at_index(b,i) \
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BFD_SEND (b, _bfd_get_elt_at_index, (b,i))
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bfd *(*_bfd_get_elt_at_index) (bfd *, symindex);
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int (*_bfd_stat_arch_elt) (bfd *, struct stat *);
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bool (*_bfd_update_armap_timestamp) (bfd *);
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/* Entry points used for symbols. */
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#define BFD_JUMP_TABLE_SYMBOLS(NAME) \
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NAME##_get_symtab_upper_bound, \
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NAME##_canonicalize_symtab, \
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NAME##_make_empty_symbol, \
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NAME##_print_symbol, \
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NAME##_get_symbol_info, \
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NAME##_get_symbol_version_string, \
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NAME##_bfd_is_local_label_name, \
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NAME##_bfd_is_target_special_symbol, \
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NAME##_get_lineno, \
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NAME##_find_nearest_line, \
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NAME##_find_line, \
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NAME##_find_inliner_info, \
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NAME##_bfd_make_debug_symbol, \
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NAME##_read_minisymbols, \
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NAME##_minisymbol_to_symbol
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long (*_bfd_get_symtab_upper_bound) (bfd *);
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long (*_bfd_canonicalize_symtab) (bfd *, struct bfd_symbol **);
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struct bfd_symbol *
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(*_bfd_make_empty_symbol) (bfd *);
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void (*_bfd_print_symbol) (bfd *, void *, struct bfd_symbol *,
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bfd_print_symbol_type);
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#define bfd_print_symbol(b,p,s,e) \
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BFD_SEND (b, _bfd_print_symbol, (b,p,s,e))
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void (*_bfd_get_symbol_info) (bfd *, struct bfd_symbol *, symbol_info *);
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#define bfd_get_symbol_info(b,p,e) \
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BFD_SEND (b, _bfd_get_symbol_info, (b,p,e))
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const char *
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(*_bfd_get_symbol_version_string) (bfd *, struct bfd_symbol *,
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bool, bool *);
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#define bfd_get_symbol_version_string(b,s,p,h) \
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BFD_SEND (b, _bfd_get_symbol_version_string, (b,s,p,h))
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bool (*_bfd_is_local_label_name) (bfd *, const char *);
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bool (*_bfd_is_target_special_symbol) (bfd *, asymbol *);
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alent *
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(*_get_lineno) (bfd *, struct bfd_symbol *);
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bool (*_bfd_find_nearest_line) (bfd *, struct bfd_symbol **,
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struct bfd_section *, bfd_vma,
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const char **, const char **,
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unsigned int *, unsigned int *);
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bool (*_bfd_find_line) (bfd *, struct bfd_symbol **,
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struct bfd_symbol *, const char **,
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unsigned int *);
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bool (*_bfd_find_inliner_info)
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(bfd *, const char **, const char **, unsigned int *);
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/* Back-door to allow format-aware applications to create debug symbols
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while using BFD for everything else. Currently used by the assembler
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when creating COFF files. */
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asymbol *
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(*_bfd_make_debug_symbol) (bfd *, void *, unsigned long size);
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#define bfd_read_minisymbols(b, d, m, s) \
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BFD_SEND (b, _read_minisymbols, (b, d, m, s))
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long (*_read_minisymbols) (bfd *, bool, void **, unsigned int *);
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#define bfd_minisymbol_to_symbol(b, d, m, f) \
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BFD_SEND (b, _minisymbol_to_symbol, (b, d, m, f))
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asymbol *
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(*_minisymbol_to_symbol) (bfd *, bool, const void *, asymbol *);
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/* Routines for relocs. */
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#define BFD_JUMP_TABLE_RELOCS(NAME) \
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NAME##_get_reloc_upper_bound, \
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NAME##_canonicalize_reloc, \
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NAME##_set_reloc, \
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NAME##_bfd_reloc_type_lookup, \
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NAME##_bfd_reloc_name_lookup
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long (*_get_reloc_upper_bound) (bfd *, sec_ptr);
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long (*_bfd_canonicalize_reloc) (bfd *, sec_ptr, arelent **,
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struct bfd_symbol **);
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void (*_bfd_set_reloc) (bfd *, sec_ptr, arelent **, unsigned int);
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/* See documentation on reloc types. */
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reloc_howto_type *
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(*reloc_type_lookup) (bfd *, bfd_reloc_code_real_type);
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reloc_howto_type *
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(*reloc_name_lookup) (bfd *, const char *);
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/* Routines used when writing an object file. */
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#define BFD_JUMP_TABLE_WRITE(NAME) \
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NAME##_set_arch_mach, \
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NAME##_set_section_contents
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bool (*_bfd_set_arch_mach) (bfd *, enum bfd_architecture,
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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 **);
|
|
|
|
@end example
|
|
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.
|
|
@example
|
|
/* 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;
|
|
@}
|
|
|
|
@end example
|
|
|
|
@findex bfd_set_default_target
|
|
@subsubsection @code{bfd_set_default_target}
|
|
@strong{Synopsis}
|
|
@example
|
|
bool bfd_set_default_target (const char *name);
|
|
@end example
|
|
@strong{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.
|
|
|
|
@findex bfd_find_target
|
|
@subsubsection @code{bfd_find_target}
|
|
@strong{Synopsis}
|
|
@example
|
|
const bfd_target *bfd_find_target (const char *target_name, bfd *abfd);
|
|
@end example
|
|
@strong{Description}@*
|
|
Return a pointer to the transfer vector for the object target
|
|
named @var{target_name}. If @var{target_name} is @code{NULL},
|
|
choose the one in the environment variable @code{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 @code{NULL}. This causes
|
|
@code{bfd_check_format} to loop over all the targets to find the
|
|
one that matches the file being read.
|
|
|
|
@findex bfd_get_target_info
|
|
@subsubsection @code{bfd_get_target_info}
|
|
@strong{Synopsis}
|
|
@example
|
|
const bfd_target *bfd_get_target_info (const char *target_name,
|
|
bfd *abfd,
|
|
bool *is_bigendian,
|
|
int *underscoring,
|
|
const char **def_target_arch);
|
|
@end example
|
|
@strong{Description}@*
|
|
Return a pointer to the transfer vector for the object target
|
|
named @var{target_name}. If @var{target_name} is @code{NULL},
|
|
choose the one in the environment variable @code{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 @code{NULL}. This causes
|
|
@code{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 @code{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 @code{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 @code{NULL}, then set it to the architecture
|
|
string specified by the target_name.
|
|
|
|
@findex bfd_target_list
|
|
@subsubsection @code{bfd_target_list}
|
|
@strong{Synopsis}
|
|
@example
|
|
const char ** bfd_target_list (void);
|
|
@end example
|
|
@strong{Description}@*
|
|
Return a freshly malloced NULL-terminated
|
|
vector of the names of all the valid BFD targets. Do not
|
|
modify the names.
|
|
|
|
@findex bfd_iterate_over_targets
|
|
@subsubsection @code{bfd_iterate_over_targets}
|
|
@strong{Synopsis}
|
|
@example
|
|
const bfd_target *bfd_iterate_over_targets
|
|
(int (*func) (const bfd_target *, void *),
|
|
void *data);
|
|
@end example
|
|
@strong{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.
|
|
|
|
@findex bfd_flavour_name
|
|
@subsubsection @code{bfd_flavour_name}
|
|
@strong{Synopsis}
|
|
@example
|
|
const char *bfd_flavour_name (enum bfd_flavour flavour);
|
|
@end example
|
|
@strong{Description}@*
|
|
Return the string form of @var{flavour}.
|
|
|