Add --redefine-sym to objcopy.
This commit is contained in:
Alan Modra
parent
c7e79b4bee
commit
57938635f5
@ -1,3 +1,32 @@
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2000-04-05 Alan Modra <alan@linuxcare.com.au>
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* binutils.texi: Remove optional `=' from long options that have
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an `=' in the argument.
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* objcopy.1: Here too. Remove extra space on discard-all.
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* binutils.texi (objcopy): Mention --redefine-sym.
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* objcopy.1: Here too.
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* NEWS: And here.
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* objcopy.c (parse_flags): Split off flag names from error message
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gettext as they are not translated.
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(copy_main): Similarly split off option name for --add-section,
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--set-section-flags, --change-section-vma, --change-section-lma
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error messages.
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Some white space changes.
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from Matthew Benjamin <matt@linuxbox.nu>
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* objcopy.c (struct redefine_node): New.
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(redefine_sym_list): New.
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(redefine_list_append): New.
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(lookup_sym_redefinition): New.
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(OPTION_REDEFINE_SYM): New.
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(copy_options): Add --redefine-sym option.
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(copy_usage): Mention it.
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(filter_symbols): Rename symbols on redefine_sym_list.
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(copy_object): Call filter_symbols if redefine_sym_list != NULL.
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(copy_main): Handle OPTION_REDEFINE_SYM.
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2000-04-04 H.J. Lu <hjl@gnu.org>
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* readelf.c (process_symbol_table): Correctly read in symbol
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@ -22,14 +22,16 @@ Changes in binutils 2.10:
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equivalent to --change-section-address. The other --adjust-* options are now
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renamed to --change-*, although --adjust-* continues to work.
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* objcopy has a --redefine-sym option that lets you rename symbols.
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* objcopy now takes a -j/--only-section option to copy only the specified
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sections.
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* dlltool now supports the IMPORTS command.
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* dlltool now takes --export-all-symbols, --no-export-all-symbols,
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--exclude-symbols, and --no-default-excludes options.
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* objcopy now takes a -j/--only-section option to copy only the specified
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sections.
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Changes in binutils 2.9:
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* Added windres program, which can be used to manipulate resources in WIN32
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@ -878,14 +878,14 @@ objcopy [ -F @var{bfdname} | --target=@var{bfdname} ]
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[ --gap-fill=@var{val} ] [ --pad-to=@var{address} ]
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[ --set-start=@var{val} ] [ --adjust-start=@var{incr} ]
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[ --change-addresses=@var{incr} ]
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[ --change-section-address=@var{section}@{=,+,-@}@var{val} ]
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[ --change-section-lma=@var{section}@{=,+,-@}@var{val} ]
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[ --change-section-vma=@var{section}@{=,+,-@}@var{val} ]
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[ --change-section-address @var{section}@{=,+,-@}@var{val} ]
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[ --change-section-lma @var{section}@{=,+,-@}@var{val} ]
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[ --change-section-vma @var{section}@{=,+,-@}@var{val} ]
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[ --change-warnings ] [ --no-change-warnings ]
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[ --set-section-flags=@var{section}=@var{flags} ]
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[ --add-section=@var{sectionname}=@var{filename} ]
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[ --set-section-flags @var{section}=@var{flags} ]
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[ --add-section @var{sectionname}=@var{filename} ]
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[ --change-leading-char ] [ --remove-leading-char ]
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[ --weaken ]
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[ --redefine-sym @var{old}=@var{new} ] [ --weaken ]
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[ -v | --verbose ] [ -V | --version ] [ --help ]
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@var{infile} [@var{outfile}]
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@end smallexample
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@ -1137,6 +1137,11 @@ different conventions for symbol names. This is different from
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when appropriate, regardless of the object file format of the output
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file.
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@item --redefine-sym @var{old}=@var{new}
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Change the name of a symbol @var{old}, to @var{new}. This can be useful
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when one is trying link two things together for which you have no
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source, and there are name collisions.
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@item --weaken
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Change all global symbols in the file to be weak. This can be useful
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when building an object which will be linked against other objects using
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@ -38,15 +38,16 @@ objcopy \- copy and translate object files
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.RB "[\|" \-\-set\-start=\fIval\fR "\|]"
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.RB "[\|" \-\-change\-start=\fIincr\fR "\|]"
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.RB "[\|" \-\-change\-addresses=\fIincr\fR "\|]"
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.RB "[\|" \-\-change\-section\-address=\fIsection{=,+,-}val\fR "\|]"
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.RB "[\|" \-\-change\-section\-lma=\fIsection{=,+,-}val\fR "\|]"
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.RB "[\|" \-\-change\-section\-vma=\fIsection{=,+,-}val\fR "\|]"
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.RB "[\|" \-\-change\-section\-address\ \fIsection{=,+,-}val\fR "\|]"
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.RB "[\|" \-\-change\-section\-lma\ \fIsection{=,+,-}val\fR "\|]"
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.RB "[\|" \-\-change\-section\-vma\ \fIsection{=,+,-}val\fR "\|]"
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.RB "[\|" \-\-change\-warnings\fR "\|]"
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.RB "[\|" \-\-no\-change\-warnings\fR "\|]"
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.RB "[\|" \-\-set\-section\-flags=\fIsection=flags\fR "\|]"
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.RB "[\|" \-\-add\-section=\fIsectionname=filename\fR "\|]"
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.RB "[\|" \-\-set\-section\-flags\ \fIsection=flags\fR "\|]"
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.RB "[\|" \-\-add\-section\ \fIsectionname=filename\fR "\|]"
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.RB "[\|" \-\-change\-leading\-char\fR "\|]"
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.RB "[\|" \-\-remove\-leading\-char\fR "\|]"
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.RB "[\|" \-\-redefine\-sym\ \fIold=new\fR "\|]"
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.RB "[\|" \-\-weaken\fR "\|]"
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.RB "[\|" \-v\ |\ \-\-verbose\fR "\|]"
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.RB "[\|" \-V\ |\ \-\-version\fR "\|]"
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@ -214,7 +215,7 @@ the sections; if the program expects sections to be loaded at a
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certain address, and this option is used to change the sections such
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that they are loaded at a different address, the program may fail.
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.TP
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.B \fB\-\-change\-section\-address=\fIsection{=,+,-}val\fR, \fB\-\-adjust\-section\-vma=\fIsection{=,+,-}val
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.B \fB\-\-change\-section\-address\ \fIsection{=,+,-}val\fR, \fB\-\-adjust\-section\-vma\ \fIsection{=,+,-}val
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Set or changes the VMA and LMA addresses of the named \fIsection\fP.
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If \fI=\fP is used, the section address is set to \fIval\fP.
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Otherwise, \fIval\fP is added to or subtracted from the section
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@ -222,7 +223,7 @@ address. See the comments under \fB\-\-change\-addresses\fP, above. If
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\fIsection\fP does not exist in the input file, a warning will be
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issued, unless \fB\-\-no\-change\-warnings\fP is used.
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.TP
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.B \fB\-\-change\-section\-lma=\fIsection{=,+,-}val
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.B \fB\-\-change\-section\-lma\ \fIsection{=,+,-}val
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Set or change the LMA address of the named \fIsection\fP. If \fI=\fP is
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used, the section address is set to \fIval\fP. Otherwise, \fIval\fP
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is added to or subtracted from the section address. See the comments
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@ -230,7 +231,7 @@ under \fB\-\-change\-addresses\fP, above. If \fIsection\fP does not exist
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in the input file, a warning will be issued, unless
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\fB\-\-no\-change\-warnings\fP is used.
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.TP
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.B \fB\-\-change\-section\-vma=\fIsection{=,+,-}val
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.B \fB\-\-change\-section\-vma\ \fIsection{=,+,-}val
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Set or change the VMA address of the named \fIsection\fP. If \fI=\fP is
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used, the section address is set to \fIval\fP. Otherwise, \fIval\fP
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is added to or subtracted from the section address. See the comments
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@ -246,14 +247,14 @@ not exist, issue a warning. This is the default.
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Do not issue a warning if \fB\-\-change\-section\-XXX\fP is used, even
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if the named section does not exist.
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.TP
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.B \fB\-\-set\-section\-flags=\fIsection=flags
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.B \fB\-\-set\-section\-flags\ \fIsection=flags
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Set the flags for the named section. The \fIflags\fP argument is a
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comma separated string of flag names. The recognized names are
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\fIalloc\fP, \fIcontents\fP, \fIload\fP, \fInoload\fP, \fIreadonly\fP,
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\fIcode\fP, \fIdata\fP, \fIrom\fP, \fIshare\fP, and \fIdebug\fP. Not
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all flags are meaningful for all object file formats.
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.TP
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.B \fB\-\-add\-section=\fIsectionname=filename
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.B \fB\-\-add\-section\ \fIsectionname=filename
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Add a new section named \fIsectionname\fR while copying the file. The
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contents of the new section are taken from the file \fIfilename\fR.
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The size of the section will be the size of the file. This option
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@ -281,6 +282,11 @@ with different conventions for symbol names. This is different from
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\fB\-\-change\-leading\-char\fP because it always changes the symbol name
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when appropriate, regardless of the object file format of the output
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.TP
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.B \-\-redefine\-sym\ \fIold=new
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Change the name of symbol \fIold\fR to \fInew\fR. This can be useful
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when one is trying link two things together for which you have no
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source, and there are name collisions.
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.TP
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.B \-\-weaken
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Change all global symbols in the file to be weak.
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.TP
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@ -38,6 +38,14 @@ struct symlist
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struct symlist *next;
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};
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/* A list to support redefine_sym. */
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struct redefine_node
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{
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char *source;
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char *target;
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struct redefine_node *next;
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};
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static void copy_usage PARAMS ((FILE *, int));
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static void strip_usage PARAMS ((FILE *, int));
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static flagword parse_flags PARAMS ((const char *));
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@ -60,6 +68,8 @@ static void copy_file
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PARAMS ((const char *, const char *, const char *, const char *));
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static int strip_main PARAMS ((int, char **));
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static int copy_main PARAMS ((int, char **));
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static const char *lookup_sym_redefinition PARAMS((const char *));
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static void redefine_list_append PARAMS ((const char *, const char *));
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#define RETURN_NONFATAL(s) {bfd_nonfatal (s); status = 1; return;}
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@ -172,12 +182,13 @@ static boolean change_leading_char = false;
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static boolean remove_leading_char = false;
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/* List of symbols to strip, keep, localize, and weaken. */
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/* List of symbols to strip, keep, localize, weaken, or redefine. */
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static struct symlist *strip_specific_list = NULL;
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static struct symlist *keep_specific_list = NULL;
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static struct symlist *localize_specific_list = NULL;
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static struct symlist *weaken_specific_list = NULL;
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static struct redefine_node *redefine_sym_list = NULL;
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/* If this is true, we weaken global symbols (set BSF_WEAK). */
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@ -202,6 +213,7 @@ static boolean weaken = false;
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#define OPTION_SET_START (OPTION_SET_SECTION_FLAGS + 1)
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#define OPTION_STRIP_UNNEEDED (OPTION_SET_START + 1)
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#define OPTION_WEAKEN (OPTION_STRIP_UNNEEDED + 1)
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#define OPTION_REDEFINE_SYM (OPTION_WEAKEN + 1)
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/* Options to handle if running as "strip". */
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@ -276,6 +288,7 @@ static struct option copy_options[] =
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{"version", no_argument, 0, 'V'},
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{"weaken", no_argument, 0, OPTION_WEAKEN},
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{"weaken-symbol", required_argument, 0, 'W'},
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{"redefine-sym", required_argument, 0, OPTION_REDEFINE_SYM},
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{0, no_argument, 0, 0}
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};
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@ -335,6 +348,7 @@ copy_usage (stream, exit_status)
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--add-section <name>=<file> Add section <name> found in <file> to output\n\
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--change-leading-char Force output format's leading character style\n\
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--remove-leading-char Remove leading character from global symbols\n\
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--redefine-sym <old>=<new> Redefine symbol name <old> to <new>\n\
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-v --verbose List all object files modified\n\
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-V --version Display this program's version number\n\
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-h --help Display this output\n\
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@ -423,7 +437,8 @@ parse_flags (s)
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strncpy (copy, s, len);
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copy[len] = '\0';
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non_fatal (_("unrecognized section flag `%s'"), copy);
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fatal (_("supported flags: alloc, load, noload, readonly, debug, code, data, rom, share, contents"));
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fatal (_("supported flags: %s"),
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"alloc, load, noload, readonly, debug, code, data, rom, share, contents");
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}
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s = snext;
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@ -549,6 +564,15 @@ filter_symbols (abfd, obfd, osyms, isyms, symcount)
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const char *name = bfd_asymbol_name (sym);
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int keep;
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if (redefine_sym_list)
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{
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const char *old_name, *new_name;
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old_name = bfd_asymbol_name (sym);
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new_name = lookup_sym_redefinition (old_name);
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name = bfd_asymbol_name (sym) = new_name;
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}
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if (change_leading_char
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&& (bfd_get_symbol_leading_char (abfd)
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!= bfd_get_symbol_leading_char (obfd))
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@ -630,6 +654,64 @@ filter_symbols (abfd, obfd, osyms, isyms, symcount)
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return dst_count;
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}
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static const char *
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lookup_sym_redefinition (source)
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const char *source;
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{
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const char *result;
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struct redefine_node *list;
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result = source;
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for (list = redefine_sym_list; list != NULL; list = list->next)
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{
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if (strcmp (source, list->source) == 0)
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{
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result = list->target;
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break;
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}
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}
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return result;
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}
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/* Add a node to a symbol redefine list */
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static void
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redefine_list_append (source, target)
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const char *source;
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const char *target;
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{
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struct redefine_node **p;
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struct redefine_node *list;
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struct redefine_node *new_node;
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for (p = &redefine_sym_list; (list = *p) != NULL; p = &list->next)
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{
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if (strcmp (source, list->source) == 0)
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{
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fatal (_("%s: Multiple redefinition of symbol \"%s\""),
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"--redefine-sym",
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source);
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}
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if (strcmp (target, list->target) == 0)
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{
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fatal (_("%s: Symbol \"%s\" is target of more than one redefinition"),
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"--redefine-sym",
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target);
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}
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}
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new_node = (struct redefine_node *) xmalloc (sizeof (struct redefine_node));
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new_node->source = strdup (source);
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new_node->target = strdup (target);
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new_node->next = NULL;
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*p = new_node;
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}
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/* Keep only every `copy_byte'th byte in MEMHUNK, which is *SIZE bytes long.
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Adjust *SIZE. */
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@ -868,6 +950,7 @@ copy_object (ibfd, obfd)
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|| convert_debugging
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|| change_leading_char
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|| remove_leading_char
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|| redefine_sym_list
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|| weaken)
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{
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/* Mark symbols used in output relocations so that they
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@ -1720,22 +1803,27 @@ copy_main (argc, argv)
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if (copy_byte < 0)
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fatal (_("byte number must be non-negative"));
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break;
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case 'i':
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interleave = atoi (optarg);
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if (interleave < 1)
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fatal (_("interleave must be positive"));
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break;
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case 'I':
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case 's': /* "source" - 'I' is preferred */
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input_target = optarg;
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break;
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case 'O':
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case 'd': /* "destination" - 'O' is preferred */
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output_target = optarg;
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break;
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case 'F':
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input_target = output_target = optarg;
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break;
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case 'j':
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p = find_section_list (optarg, true);
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if (p->remove)
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@ -1743,6 +1831,7 @@ copy_main (argc, argv)
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p->copy = true;
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sections_copied = true;
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break;
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case 'R':
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p = find_section_list (optarg, true);
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if (p->copy)
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@ -1750,45 +1839,59 @@ copy_main (argc, argv)
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p->remove = true;
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sections_removed = true;
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break;
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case 'S':
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strip_symbols = STRIP_ALL;
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break;
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case 'g':
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strip_symbols = STRIP_DEBUG;
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break;
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case OPTION_STRIP_UNNEEDED:
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strip_symbols = STRIP_UNNEEDED;
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break;
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case 'K':
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add_specific_symbol (optarg, &keep_specific_list);
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break;
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case 'N':
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add_specific_symbol (optarg, &strip_specific_list);
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break;
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case 'L':
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add_specific_symbol (optarg, &localize_specific_list);
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break;
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case 'W':
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add_specific_symbol (optarg, &weaken_specific_list);
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break;
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case 'p':
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preserve_dates = true;
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break;
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case 'x':
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discard_locals = LOCALS_ALL;
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break;
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case 'X':
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discard_locals = LOCALS_START_L;
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break;
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case 'v':
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verbose = true;
|
||||
break;
|
||||
|
||||
case 'V':
|
||||
show_version = true;
|
||||
break;
|
||||
|
||||
case OPTION_WEAKEN:
|
||||
weaken = true;
|
||||
break;
|
||||
|
||||
case OPTION_ADD_SECTION:
|
||||
{
|
||||
const char *s;
|
||||
@ -1801,7 +1904,7 @@ copy_main (argc, argv)
|
||||
s = strchr (optarg, '=');
|
||||
|
||||
if (s == NULL)
|
||||
fatal (_("bad format for --add-section NAME=FILENAME"));
|
||||
fatal (_("bad format for %s"), "--add-section");
|
||||
|
||||
if (stat (s + 1, & st) < 0)
|
||||
fatal (_("cannot stat: %s: %s"), s + 1, strerror (errno));
|
||||
@ -1834,9 +1937,11 @@ copy_main (argc, argv)
|
||||
add_sections = pa;
|
||||
}
|
||||
break;
|
||||
|
||||
case OPTION_CHANGE_START:
|
||||
change_start = parse_vma (optarg, "--change-start");
|
||||
break;
|
||||
|
||||
case OPTION_CHANGE_SECTION_ADDRESS:
|
||||
case OPTION_CHANGE_SECTION_LMA:
|
||||
case OPTION_CHANGE_SECTION_VMA:
|
||||
@ -1908,19 +2013,24 @@ copy_main (argc, argv)
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case OPTION_CHANGE_ADDRESSES:
|
||||
change_section_address = parse_vma (optarg, "--change-addresses");
|
||||
change_start = change_section_address;
|
||||
break;
|
||||
|
||||
case OPTION_CHANGE_WARNINGS:
|
||||
change_warn = true;
|
||||
break;
|
||||
|
||||
case OPTION_CHANGE_LEADING_CHAR:
|
||||
change_leading_char = true;
|
||||
break;
|
||||
|
||||
case OPTION_DEBUGGING:
|
||||
convert_debugging = true;
|
||||
break;
|
||||
|
||||
case OPTION_GAP_FILL:
|
||||
{
|
||||
bfd_vma gap_fill_vma;
|
||||
@ -1939,16 +2049,52 @@ copy_main (argc, argv)
|
||||
gap_fill_set = true;
|
||||
}
|
||||
break;
|
||||
|
||||
case OPTION_NO_CHANGE_WARNINGS:
|
||||
change_warn = false;
|
||||
break;
|
||||
|
||||
case OPTION_PAD_TO:
|
||||
pad_to = parse_vma (optarg, "--pad-to");
|
||||
pad_to_set = true;
|
||||
break;
|
||||
|
||||
case OPTION_REMOVE_LEADING_CHAR:
|
||||
remove_leading_char = true;
|
||||
break;
|
||||
|
||||
case OPTION_REDEFINE_SYM:
|
||||
{
|
||||
/* Push this redefinition onto redefine_symbol_list. */
|
||||
|
||||
int len;
|
||||
const char *s;
|
||||
const char *nextarg;
|
||||
char *source, *target;
|
||||
|
||||
s = strchr (optarg, '=');
|
||||
if (s == NULL)
|
||||
{
|
||||
fatal (_("bad format for %s"), "--redefine-sym");
|
||||
}
|
||||
|
||||
len = s - optarg;
|
||||
source = (char *) xmalloc (len + 1);
|
||||
strncpy (source, optarg, len);
|
||||
source[len] = '\0';
|
||||
|
||||
nextarg = s + 1;
|
||||
len = strlen (nextarg);
|
||||
target = (char *) xmalloc (len + 1);
|
||||
strcpy (target, nextarg);
|
||||
|
||||
redefine_list_append (source, target);
|
||||
|
||||
free (source);
|
||||
free (target);
|
||||
}
|
||||
break;
|
||||
|
||||
case OPTION_SET_SECTION_FLAGS:
|
||||
{
|
||||
const char *s;
|
||||
@ -1957,7 +2103,7 @@ copy_main (argc, argv)
|
||||
|
||||
s = strchr (optarg, '=');
|
||||
if (s == NULL)
|
||||
fatal (_("bad format for --set-section-flags"));
|
||||
fatal (_("bad format for %s"), "--set-section-flags");
|
||||
|
||||
len = s - optarg;
|
||||
name = (char *) xmalloc (len + 1);
|
||||
@ -1970,14 +2116,18 @@ copy_main (argc, argv)
|
||||
p->flags = parse_flags (s + 1);
|
||||
}
|
||||
break;
|
||||
|
||||
case OPTION_SET_START:
|
||||
set_start = parse_vma (optarg, "--set-start");
|
||||
set_start_set = true;
|
||||
break;
|
||||
|
||||
case 0:
|
||||
break; /* we've been given a long option */
|
||||
|
||||
case 'h':
|
||||
copy_usage (stdout, 0);
|
||||
|
||||
default:
|
||||
copy_usage (stderr, 1);
|
||||
}
|
||||
@ -2046,7 +2196,8 @@ copy_main (argc, argv)
|
||||
sprintf_vma (buff, p->vma_val);
|
||||
|
||||
/* xgettext:c-format */
|
||||
non_fatal (_("Warning: --change-section-vma %s%c0x%s never used"),
|
||||
non_fatal (_("%s %s%c0x%s never used"),
|
||||
"--change-section-vma",
|
||||
p->name,
|
||||
p->change_vma == CHANGE_SET ? '=' : '+',
|
||||
buff);
|
||||
@ -2059,7 +2210,8 @@ copy_main (argc, argv)
|
||||
sprintf_vma (buff, p->lma_val);
|
||||
|
||||
/* xgettext:c-format */
|
||||
non_fatal (_("Warning: --change-section-lma %s%c0x%s never used"),
|
||||
non_fatal (_("%s %s%c0x%s never used"),
|
||||
"--change-section-lma",
|
||||
p->name,
|
||||
p->change_lma == CHANGE_SET ? '=' : '+',
|
||||
buff);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user