1 .\" Copyright (c) 1991 Free Software Foundation
2 .\" See section COPYING for conditions for redistribution
3 .TH objcopy 1 "October 1994" "cygnus support" "GNU Development Tools"
11 objcopy \- copy and translate object files
18 .RB "[\|" \-F\ \fIbfdname\fR\ |\ \fB\-\-target=\fIbfdname\fR "\|]"
19 .RB "[\|" \-I\ \fIbfdname\fR\ |\ \fB\-\-input\-target=\fIbfdname\fR "\|]"
20 .RB "[\|" \-O\ \fIbfdname\fR\ |\ \fB\-\-output\-target=\fIbfdname\fR "\|]"
21 .RB "[\|" \-R\ \fIsectionname\fR\ |\ \fB\-\-remove\-section=\fIsectionname\fR "\|]"
22 .RB "[\|" \-S\fR\ |\ \fB\-\-strip\-all\fR "\|]"
23 .RB "[\|" \-g\fR\ |\ \fB\-\-strip\-debug\fR "\|]"
24 .RB "[\|" \-\-strip\-unneeded\fR "\|]"
25 .RB "[\|" \-K\ \fIsymbolname\fR\ |\ \fB\-\-keep\-symbol=\fIsymbolname\fR "\|]"
26 .RB "[\|" \-N\ \fIsymbolname\fR\ |\ \fB\-\-strip\-symbol=\fIsymbolname\fR "\|]"
27 .RB "[\|" \-x\fR\ |\ \fB\-\-discard\-all\fR "\|]"
28 .RB "[\|" \-X\fR\ |\ \fB\-\-discard\-locals\fR "\|]"
29 .RB "[\|" \-b\ \fIbyte\fR\ |\ \fB\-\-byte=\fIbyte\fR "\|]"
30 .RB "[\|" \-i\ \fIinterleave\fR\ |\ \fB\-\-interleave=\fIinterleave\fR "\|]"
31 .RB "[\|" \-\-gap\-fill=\fIval\fR "\|]"
32 .RB "[\|" \-\-pad\-to=\fIaddress\fR "\|]"
33 .RB "[\|" \-\-set\-start=\fIval\fR "\|]"
34 .RB "[\|" \-\-adjust\-start=\fIincr\fR "\|]"
35 .RB "[\|" \-\-adjust\-vma=\fIincr\fR "\|]"
36 .RB "[\|" \-\-adjust\-section\-vma=\fIsection{=,+,-}val\fR "\|]"
37 .RB "[\|" \-\-adjust\-warnings\fR "\|]"
38 .RB "[\|" \-\-no\-adjust\-warnings\fR "\|]"
39 .RB "[\|" \-\-set\-section\-flags=\fIsection=flags\fR "\|]"
40 .RB "[\|" \-\-add\-section=\fIsectionname=filename\fR "\|]"
41 .RB "[\|" \-v\ |\ \-\-verbose\fR "\|]"
42 .RB "[\|" \-V\ |\ \-\-version\fR "\|]"
43 .RB "[\|" \-\-help\fR "\|]"
45 .RB "[\|" outfile\fR "\|]"
49 utility copies the contents of an object file to another.
51 uses the GNU BFD Library to read and write the object files. It can
52 write the destination object file in a format different from that of
53 the source object file. The exact behavior of
55 is controlled by command-line options.
58 creates temporary files to do its translations and deletes them
61 uses BFD to do all its translation work; it knows about all the
62 formats BFD knows about, and thus is able to recognize most formats
63 without being told explicitly.
66 can be used to generate S-records by using an output target of
72 can be used to generate a raw binary file by using an output target of
78 generates a raw binary file, it will essentially produce a memory dump
79 of the contents of the input object file. All symbols and relocation
80 information will be discarded. The memory dump will start at the
81 virtual address of the lowest section copied into the output file.
83 When generating an S-record or a raw binary file, it may be helpful to
86 to remove sections containing debugging information. In some cases
88 will be useful to remove sections which contain information which is
89 not needed by the binary file.
94 are the source and output files respectively. If you do not specify
97 creates a temporary file and destructively renames the result with the
98 name of the input file.
102 .B \-I \fIbfdname\fR, \fB\-\-input\-target=\fIbfdname
103 Consider the source file's object format to be
105 rather than attempting to deduce it.
107 .B \-O \fIbfdname\fR, \fB\-\-output\-target=\fIbfdname
108 Write the output file using the object format
111 .B \-F \fIbfdname\fR, \fB\-\-target=\fIbfdname
114 as the object format for both the input and the output file; i.e.
115 simply transfer data from source to destination with no translation.
117 .B \-R \fIsectionname\fR, \fB\-\-remove-section=\fIsectionname
118 Remove the named section from the file. This option may be given more
119 than once. Note that using this option inappropriately may make the
120 output file unusable.
122 .B \-S\fR, \fB\-\-strip\-all
123 Do not copy relocation and symbol information from the source file.
125 .B \-g\fR, \fB\-\-strip\-debug
126 Do not copy debugging symbols from the source file.
128 .B \-\-strip\-unneeded
129 Strip all symbols that are not needed for relocation processing.
131 .B \-K \fIsymbolname\fR, \fB\-\-keep\-symbol=\fIsymbolname
132 Copy only symbol \fIsymbolname\fP from the source file. This option
133 may be given more than once.
135 .B \-N \fIsymbolname\fR, \fB\-\-strip\-symbol=\fIsymbolname
136 Do not copy symbol \fIsymbolname\fP from the source file. This option
137 may be given more than once, and may be combined with strip options
138 other than \fB\-K\fR.
140 .B \-x\fR, \fB \-\-discard\-all
141 Do not copy non-global symbols from the source file.
143 .B \-X\fR, \fB\-\-discard\-locals
144 Do not copy compiler-generated local symbols. (These usually start
147 .B \-b \fIbyte\fR, \fB\-\-byte=\fIbyte
148 Keep only every \fIbyte\fPth byte of the input file (header data is
149 not affected). \fIbyte\fP can be in the range from 0 to the
150 interleave-1. This option is useful for creating files to program
151 ROMs. It is typically used with an srec output target.
153 .B \-i \fIinterleave\fR, \fB\-\-interleave=\fIinterleave
154 Only copy one out of every \fIinterleave\fP bytes. Which one to copy is
155 selected by the \fB\-b\fP or \fB\-\-byte\fP option. The default is 4.
156 The interleave is ignored if neither \fB\-b\fP nor \fB\-\-byte\fP is given.
158 .B \-\-gap\-fill=\fIval
159 Fill gaps between sections with \fIval\fP. This is done by increasing
160 the size of the section with the lower address, and filling in the extra
161 space created with \fIval\fP.
163 .B \-\-pad\-to=\fIaddress
164 Pad the output file up to the virtual address \fIaddress\fP. This is
165 done by increasing the size of the last section. The extra space is
166 filled in with the value specified by \fB\-\-gap\-fill\fP (default
169 .B \fB\-\-set\-start=\fIval
170 Set the start address of the new file to \fIval\fP. Not all object
171 file formats support setting the start address.
173 .B \fB\-\-adjust\-start=\fIincr
174 Adjust the start address by adding \fIincr\fP. Not all object file
175 formats support setting the start address.
177 .B \fB\-\-adjust\-vma=\fIincr
178 Adjust the address of all sections, as well as the start address, by
179 adding \fIincr\fP. Some object file formats do not permit section
180 addresses to be changed arbitrarily. Note that this does not relocate
181 the sections; if the program expects sections to be loaded at a
182 certain address, and this option is used to change the sections such
183 that they are loaded at a different address, the program may fail.
185 .B \fB\-\-adjust\-section\-vma=\fIsection{=,+,-}val
186 Set or adjust the address of the named \fIsection\fP. If \fI=\fP is
187 used, the section address is set to \fIval\fP. Otherwise, \fIval\fP
188 is added to or subtracted from the section address. See the comments
189 under \fB\-\-adjust\-vma\fP, above. If \fIsection\fP does not exist
190 in the input file, a warning will be issued, unless
191 \fB\-\-no\-adjust\-warnings\fP is used.
193 .B \fB\-\-adjust\-warnings
194 If \fB\-\-adjust\-section\-vma\fP is used, and the named section does
195 not exist, issue a warning. This is the default.
197 .B \fB\-\-no\-adjust\-warnings
198 Do not issue a warning if \fB\-\-adjust\-section\-vma\fP is used, even
199 if the named section does not exist.
201 .B \fB\-\-set\-section\-flags=\fIsection=flags
202 Set the flags for the named section. The \fIflags\fP argument is a
203 comma separated string of flag names. The recognized names are
204 \fIalloc\fP, \fIload\fP, \fIreadonly\fP, \fIcode\fP, \fIdata\fP, and
205 \fIrom\fP. Not all flags are meaningful for all object file
208 .B \fB\-\-add\-section=\fIsectionname=filename
209 Add a new section named \fIsectionname\fR while copying the file. The
210 contents of the new section are taken from the file \fIfilename\fR.
211 The size of the section will be the size of the file. This option
212 only works on file formats which can support sections with arbitrary
215 .B \-v\fR, \fB\-\-verbose
216 Verbose output: list all object files modified. In the case of
217 archives, "\fBobjcopy \-V\fR" lists all members of the archive.
219 .B \-V\fR, \fB\-\-version
220 Show the version number of
225 Show a summary of the options to
229 .RB "`\|" binutils "\|'"
235 The GNU Binary Utilities\c
236 \&, Roland H. Pesch (June 1993).
239 Copyright (c) 1993,1994 Free Software Foundation, Inc.
241 Permission is granted to make and distribute verbatim copies of
242 this manual provided the copyright notice and this permission notice
243 are preserved on all copies.
245 Permission is granted to copy and distribute modified versions of this
246 manual under the conditions for verbatim copying, provided that the
247 entire resulting derived work is distributed under the terms of a
248 permission notice identical to this one.
250 Permission is granted to copy and distribute translations of this
251 manual into another language, under the above conditions for modified
252 versions, except that this permission notice may be included in
253 translations approved by the Free Software Foundation instead of in
254 the original English.