mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-24 23:32:06 +00:00
113 lines
3.2 KiB
Plaintext
113 lines
3.2 KiB
Plaintext
@section File formats
|
|
A format is a BFD concept of high level file contents type. The
|
|
formats supported by BFD are:
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
@code{bfd_object}
|
|
@end itemize
|
|
The BFD may contain data, symbols, relocations and debug info.
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
@code{bfd_archive}
|
|
@end itemize
|
|
The BFD contains other BFDs and an optional index.
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
@code{bfd_core}
|
|
@end itemize
|
|
The BFD contains the result of an executable core dump.
|
|
|
|
@subsection File format functions
|
|
|
|
|
|
@findex bfd_check_format
|
|
@subsubsection @code{bfd_check_format}
|
|
@strong{Synopsis}
|
|
@example
|
|
bfd_boolean bfd_check_format (bfd *abfd, bfd_format format);
|
|
@end example
|
|
@strong{Description}@*
|
|
Verify if the file attached to the BFD @var{abfd} is compatible
|
|
with the format @var{format} (i.e., one of @code{bfd_object},
|
|
@code{bfd_archive} or @code{bfd_core}).
|
|
|
|
If the BFD has been set to a specific target before the
|
|
call, only the named target and format combination is
|
|
checked. If the target has not been set, or has been set to
|
|
@code{default}, then all the known target backends is
|
|
interrogated to determine a match. If the default target
|
|
matches, it is used. If not, exactly one target must recognize
|
|
the file, or an error results.
|
|
|
|
The function returns @code{TRUE} on success, otherwise @code{FALSE}
|
|
with one of the following error codes:
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
@code{bfd_error_invalid_operation} -
|
|
if @code{format} is not one of @code{bfd_object}, @code{bfd_archive} or
|
|
@code{bfd_core}.
|
|
|
|
@item
|
|
@code{bfd_error_system_call} -
|
|
if an error occured during a read - even some file mismatches
|
|
can cause bfd_error_system_calls.
|
|
|
|
@item
|
|
@code{file_not_recognised} -
|
|
none of the backends recognised the file format.
|
|
|
|
@item
|
|
@code{bfd_error_file_ambiguously_recognized} -
|
|
more than one backend recognised the file format.
|
|
@end itemize
|
|
|
|
@findex bfd_check_format_matches
|
|
@subsubsection @code{bfd_check_format_matches}
|
|
@strong{Synopsis}
|
|
@example
|
|
bfd_boolean bfd_check_format_matches
|
|
(bfd *abfd, bfd_format format, char ***matching);
|
|
@end example
|
|
@strong{Description}@*
|
|
Like @code{bfd_check_format}, except when it returns FALSE with
|
|
@code{bfd_errno} set to @code{bfd_error_file_ambiguously_recognized}. In that
|
|
case, if @var{matching} is not NULL, it will be filled in with
|
|
a NULL-terminated list of the names of the formats that matched,
|
|
allocated with @code{malloc}.
|
|
Then the user may choose a format and try again.
|
|
|
|
When done with the list that @var{matching} points to, the caller
|
|
should free it.
|
|
|
|
@findex bfd_set_format
|
|
@subsubsection @code{bfd_set_format}
|
|
@strong{Synopsis}
|
|
@example
|
|
bfd_boolean bfd_set_format (bfd *abfd, bfd_format format);
|
|
@end example
|
|
@strong{Description}@*
|
|
This function sets the file format of the BFD @var{abfd} to the
|
|
format @var{format}. If the target set in the BFD does not
|
|
support the format requested, the format is invalid, or the BFD
|
|
is not open for writing, then an error occurs.
|
|
|
|
@findex bfd_format_string
|
|
@subsubsection @code{bfd_format_string}
|
|
@strong{Synopsis}
|
|
@example
|
|
const char *bfd_format_string (bfd_format format);
|
|
@end example
|
|
@strong{Description}@*
|
|
Return a pointer to a const string
|
|
@code{invalid}, @code{object}, @code{archive}, @code{core}, or @code{unknown},
|
|
depending upon the value of @var{format}.
|
|
|