[@option{--set-section-flags} @var{sectionpattern}=@var{flags}]
[@option{--add-section} @var{sectionname}=@var{filename}]
[@option{--dump-section} @var{sectionname}=@var{filename}]
+ [@option{--update-section} @var{sectionname}=@var{filename}]
[@option{--rename-section} @var{oldname}=@var{newname}[,@var{flags}]]
[@option{--long-section-names} @{enable,disable,keep@}]
[@option{--change-leading-char}] [@option{--remove-leading-char}]
as raw binary data, without applying any relocations. The option can
be specified more than once.
+@item --update-section @var{sectionname}=@var{filename}
+Replace the existing contents of a section named @var{sectionname}
+with the contents of file @var{filename}. The size of the section
+will be adjusted to the size of the file. The section flags for
+@var{sectionname} will be unchanged. For ELF format files the section
+to segment mapping will also remain unchanged, something which is not
+possible using @option{--remove-section} followed by
+@option{--add-section}. The option can be specified more than once.
+
+Note - it is possible to use @option{--rename-section} and
+@option{--update-section} to both update and rename a section from one
+command line. In this case, pass the original section name to
+@option{--update-section}, and the original and new section names to
+@option{--rename-section}.
+
@item --rename-section @var{oldname}=@var{newname}[,@var{flags}]
Rename a section from @var{oldname} to @var{newname}, optionally
changing the section's flags to @var{flags} in the process. This has
@var{string}.
@item --add-gnu-debuglink=@var{path-to-file}
-Creates a .gnu_debuglink section which contains a reference to @var{path-to-file}
-and adds it to the output file.
+Creates a .gnu_debuglink section which contains a reference to
+@var{path-to-file} and adds it to the output file. Note: the file at
+@var{path-to-file} must exist. Part of the process of adding the
+.gnu_debuglink section involves embedding a checksum of the contents
+of the debug info file into the section.
+
+If the debug info file is built in one location but it is going to be
+installed at a later time into a different location then do not use
+the path to the installed location. The @option{--add-gnu-debuglink}
+option will fail because the installed file does not exist yet.
+Instead put the debug info file in the current directory and use the
+@option{--add-gnu-debuglink} option without any directory components,
+like this:
+
+@smallexample
+ objcopy --add-gnu-debuglink=foo.debug
+@end smallexample
+
+At debug time the debugger will attempt to look for the separate debug
+info file in a set of known locations. The exact set of these
+locations varies depending upon the distribution being used, but it
+typically includes:
+
+@table @code
+
+@item * The same directory as the executable.
+
+@item * A sub-directory of the directory containing the executable
+called .debug
+
+@item * A global debug directory such as /usr/lib/debug.
+@end table
+
+As long as the debug info file has been installed into one of these
+locations before the debugger is run everything should work
+correctly.
@item --keep-file-symbols
When stripping a file, perhaps with @option{--strip-debug} or
linker input file.
@item --compress-debug-sections
-Compress DWARF debug sections using zlib.
+Compress DWARF debug sections using zlib. The debug sections are
+renamed to begin with @samp{.zdebug} instead of @samp{.debug}. Note -
+if compression would actually make a section @emph{larger} then it is
+not compressed or renamed.
+
+@item --compress-debug-sections=none
+@itemx --compress-debug-sections=zlib
+@itemx --compress-debug-sections=zlib-gnu
+@itemx --compress-debug-sections=zlib-gabi
+For ELF files, these options control how DWARF debug sections are
+compressed. @option{--compress-debug-sections=none} is equivalent
+to @option{--nocompress-debug-sections}.
+@option{--compress-debug-sections=zlib} and
+@option{--compress-debug-sections=zlib-gnu} are equivalent to
+@option{--compress-debug-sections}.
+@option{--compress-debug-sections=zlib-gabi} compresses
+DWARF debug sections with SHF_COMPRESSED from the ELF ABI.
@item --decompress-debug-sections
-Decompress DWARF debug sections using zlib.
+Decompress DWARF debug sections using zlib. The original section
+names of the compressed sections are restored.
@item -V
@itemx --version
@item -k
@itemx --kill-at
-Specifies that when @command{dlltool} is creating the exports file it
-should not append the string @samp{@@ <number>}. These numbers are
-called ordinal numbers and they represent another way of accessing the
-function in a DLL, other than by name.
+Specifies that @samp{@@<number>} suffixes should be omitted from the names
+of stdcall functions that will be imported from the DLL. This is
+useful when creating an import library for a DLL which exports stdcall
+functions but without the usual @samp{@@<number>} symbol name suffix.
+
+This does not change the naming of symbols provided by the import library
+to programs linked against it, but only the entries in the import table
+(ie the .idata section).
@item -A
@itemx --add-stdcall-alias
@option{--input-mach} isn't specified, it will match any ELF
machine types.
-The supported ELF machine types are, @var{L1OM}, @var{K1OM} and
-@var{x86-64}.
+The supported ELF machine types are, @var{i386}, @var{IAMCU}, @var{L1OM},
+@var{K1OM} and @var{x86-64}.
@item --output-mach=@var{machine}
Change the ELF machine type in the ELF header to @var{machine}. The
projects / deliverable / binutils-gdb.git / blobdiff