-.\" Copyright (c) 1991 Free Software Foundation
+.\" Copyright (c) 1991, 93, 94, 95, 96, 1997 Free Software Foundation
.\" See section COPYING for conditions for redistribution
-.TH objcopy 1 "June 1993" "cygnus support" "GNU Development Tools"
+.TH objcopy 1 "October 1994" "cygnus support" "GNU Development Tools"
.de BP
.sp
.ti \-.2i
.na
.TP
.B objcopy
-.RB "[\|" \-F \fIformat\fB | \-\-format=\fIformat\fB "\|]"
-.RB "[\|" \-I \fIformat\fB | \-\-input\-format=\fIformat\fB "\|]"
-.RB "[\|" \-O \fIformat\fB | \-\-output\-format=\fIformat\fB "\|]"
-.RB "[\|" \-S | \-\-strip\-all "\|]"
-.RB "[\|" \-g | \-\-strip\-debug "\|]"
-.RB "[\|" \-x | \-\-discard\-all "\|]"
-.RB "[\|" \-X | \-\-discard\-locals "\|]"
-.RB "[\|" \-v | \-\-verbose "\|]"
-.RB "[\|" \-V | \-\-version "\|]"
-.RB "[\|" \-\-help "\|]"
+.RB "[\|" \-F\ \fIbfdname\fR\ |\ \fB\-\-target=\fIbfdname\fR "\|]"
+.RB "[\|" \-I\ \fIbfdname\fR\ |\ \fB\-\-input\-target=\fIbfdname\fR "\|]"
+.RB "[\|" \-O\ \fIbfdname\fR\ |\ \fB\-\-output\-target=\fIbfdname\fR "\|]"
+.RB "[\|" \-R\ \fIsectionname\fR\ |\ \fB\-\-remove\-section=\fIsectionname\fR "\|]"
+.RB "[\|" \-S\fR\ |\ \fB\-\-strip\-all\fR "\|]"
+.RB "[\|" \-g\fR\ |\ \fB\-\-strip\-debug\fR "\|]"
+.RB "[\|" \-\-strip\-unneeded\fR "\|]"
+.RB "[\|" \-K\ \fIsymbolname\fR\ |\ \fB\-\-keep\-symbol=\fIsymbolname\fR "\|]"
+.RB "[\|" \-N\ \fIsymbolname\fR\ |\ \fB\-\-strip\-symbol=\fIsymbolname\fR "\|]"
+.RB "[\|" \-L\ \fIsymbolname\fR\ |\ \fB\-\-localize\-symbol=\fIsymbolname\fR "\|]"
+.RB "[\|" \-W\ \fIsymbolname\fR\ |\ \fB\-\-weaken\-symbol=\fIsymbolname\fR "\|]"
+.RB "[\|" \-x\fR\ |\ \fB\-\-discard\-all\fR "\|]"
+.RB "[\|" \-X\fR\ |\ \fB\-\-discard\-locals\fR "\|]"
+.RB "[\|" \-b\ \fIbyte\fR\ |\ \fB\-\-byte=\fIbyte\fR "\|]"
+.RB "[\|" \-i\ \fIinterleave\fR\ |\ \fB\-\-interleave=\fIinterleave\fR "\|]"
+.RB "[\|" \-p\fR\ |\ \fB\-\-preserve\-dates\fR "\|]"
+.RB "[\|" \-\-debugging "\|]"
+.RB "[\|" \-\-gap\-fill=\fIval\fR "\|]"
+.RB "[\|" \-\-pad\-to=\fIaddress\fR "\|]"
+.RB "[\|" \-\-set\-start=\fIval\fR "\|]"
+.RB "[\|" \-\-adjust\-start=\fIincr\fR "\|]"
+.RB "[\|" \-\-adjust\-vma=\fIincr\fR "\|]"
+.RB "[\|" \-\-adjust\-section\-vma=\fIsection{=,+,-}val\fR "\|]"
+.RB "[\|" \-\-adjust\-warnings\fR "\|]"
+.RB "[\|" \-\-no\-adjust\-warnings\fR "\|]"
+.RB "[\|" \-\-set\-section\-flags=\fIsection=flags\fR "\|]"
+.RB "[\|" \-\-add\-section=\fIsectionname=filename\fR "\|]"
+.RB "[\|" \-\-change\-leading\-char\fR "\|]"
+.RB "[\|" \-\-remove\-leading\-char\fR "\|]"
+.RB "[\|" \-\-weaken\fR "\|]"
+.RB "[\|" \-v\ |\ \-\-verbose\fR "\|]"
+.RB "[\|" \-V\ |\ \-\-version\fR "\|]"
+.RB "[\|" \-\-help\fR "\|]"
.B infile
-.RB "[\|" outfile "\|]"
+.RB "[\|" outfile\fR "\|]"
.SH DESCRIPTION
The GNU
.B objcopy
formats BFD knows about, and thus is able to recognize most formats
without being told explicitly.
.PP
+.B objcopy
+can be used to generate S-records by using an output target of
+.B srec
+(e.g., use
+.B -O srec).
+.PP
+.B objcopy
+can be used to generate a raw binary file by using an output target of
+.B binary
+(e.g., use
+.B -O binary).
+When
+.B objcopy
+generates a raw binary file, it will essentially produce a memory dump
+of the contents of the input object file. All symbols and relocation
+information will be discarded. The memory dump will start at the
+virtual address of the lowest section copied into the output file.
+.PP
+When generating an S-record or a raw binary file, it may be helpful to
+use
+.B -S
+to remove sections containing debugging information. In some cases
+.B -R
+will be useful to remove sections which contain information which is
+not needed by the binary file.
+.PP
.I infile
and
.I outfile
.SH OPTIONS
.TP
-.B \-I \fIformat
-.TP
-.B \-\-input\-format=\fIformat
+.B \-I \fIbfdname\fR, \fB\-\-input\-target=\fIbfdname
Consider the source file's object format to be
-.IR format ,
+.IR bfdname ,
rather than attempting to deduce it.
.TP
-.B \-O \fIformat
-.TP
-.B \-\-output\-format=\fIformat
+.B \-O \fIbfdname\fR, \fB\-\-output\-target=\fIbfdname
Write the output file using the object format
-.IR format .
-.TP
-.B \-F \fIformat\fB
+.IR bfdname .
.TP
-.B \-\-format=\fIformat
+.B \-F \fIbfdname\fR, \fB\-\-target=\fIbfdname
Use
-.I format
+.I bfdname
as the object format for both the input and the output file; i.e.
simply transfer data from source to destination with no translation.
.TP
-.B \-S
+.B \-R \fIsectionname\fR, \fB\-\-remove-section=\fIsectionname
+Remove the named section from the file. This option may be given more
+than once. Note that using this option inappropriately may make the
+output file unusable.
.TP
-.B \-\-strip\-all
+.B \-S\fR, \fB\-\-strip\-all
Do not copy relocation and symbol information from the source file.
.TP
-.B \-g
-.TP
-.B \-\-strip\-debug
+.B \-g\fR, \fB\-\-strip\-debug
Do not copy debugging symbols from the source file.
.TP
-.B \-x
+.B \-\-strip\-unneeded
+Strip all symbols that are not needed for relocation processing.
.TP
-.B \-\-discard\-all
-Do not copy non-global symbols from the source file.
+.B \-K \fIsymbolname\fR, \fB\-\-keep\-symbol=\fIsymbolname
+Copy only symbol \fIsymbolname\fP from the source file. This option
+may be given more than once.
+.TP
+.B \-N \fIsymbolname\fR, \fB\-\-strip\-symbol=\fIsymbolname
+Do not copy symbol \fIsymbolname\fP from the source file. This option
+may be given more than once.
+.TP
+.B \-L \fIsymbolname\fR, \fB\-\-localize\-symbol=\fIsymbolname
+Make symbol \fIsymbolname\fP local to the file, so that it is not
+visible externally. This option may be given more than once.
.TP
-.B \-X
+.B \-W \fIsymbolname\fR, \fB\-\-weaken\-symbol=\fIsymbolname
+Make symbol \fIsymbolname\fP weak. This option may be given more than once.
.TP
-.B \-\-discard\-locals
+.B \-x\fR, \fB \-\-discard\-all
+Do not copy non-global symbols from the source file.
+.TP
+.B \-X\fR, \fB\-\-discard\-locals
Do not copy compiler-generated local symbols. (These usually start
with "L" or ".").
.TP
-.B \-v
+.B \-b \fIbyte\fR, \fB\-\-byte=\fIbyte
+Keep only every \fIbyte\fPth byte of the input file (header data is
+not affected). \fIbyte\fP can be in the range from 0 to the
+interleave-1. This option is useful for creating files to program
+ROMs. It is typically used with an srec output target.
+.TP
+.B \-i \fIinterleave\fR, \fB\-\-interleave=\fIinterleave
+Only copy one out of every \fIinterleave\fP bytes. Which one to copy is
+selected by the \fB\-b\fP or \fB\-\-byte\fP option. The default is 4.
+The interleave is ignored if neither \fB\-b\fP nor \fB\-\-byte\fP is given.
+.TP
+.B \-p\fR, \fB\-\-preserve\-dates
+Set the access and modification dates of the output file to be the same
+as those of the input file.
.TP
-.B \-\-verbose
+.B \-\-debugging
+Convert debugging information, if possible. This is not the default
+because only certain debugging formats are supported, and the
+conversion process can be time consuming.
+.TP
+.B \-\-gap\-fill=\fIval
+Fill gaps between sections with \fIval\fP. This operation applies to
+the \fIload address\fP (LMA) of the sections. It is done by increasing
+the size of the section with the lower address, and filling in the extra
+space created with \fIval\fP.
+.TP
+.B \-\-pad\-to=\fIaddress
+Pad the output file up to the load address \fIaddress\fP. This is
+done by increasing the size of the last section. The extra space is
+filled in with the value specified by \fB\-\-gap\-fill\fP (default
+zero).
+.TP
+.B \fB\-\-set\-start=\fIval
+Set the start address of the new file to \fIval\fP. Not all object
+file formats support setting the start address.
+.TP
+.B \fB\-\-adjust\-start=\fIincr
+Adjust the start address by adding \fIincr\fP. Not all object file
+formats support setting the start address.
+.TP
+.B \fB\-\-adjust\-vma=\fIincr
+Adjust the address of all sections, as well as the start address, by
+adding \fIincr\fP. Some object file formats do not permit section
+addresses to be changed arbitrarily. Note that this does not relocate
+the sections; if the program expects sections to be loaded at a
+certain address, and this option is used to change the sections such
+that they are loaded at a different address, the program may fail.
+.TP
+.B \fB\-\-adjust\-section\-vma=\fIsection{=,+,-}val
+Set or adjust the address of the named \fIsection\fP. If \fI=\fP is
+used, the section address is set to \fIval\fP. Otherwise, \fIval\fP
+is added to or subtracted from the section address. See the comments
+under \fB\-\-adjust\-vma\fP, above. If \fIsection\fP does not exist
+in the input file, a warning will be issued, unless
+\fB\-\-no\-adjust\-warnings\fP is used.
+.TP
+.B \fB\-\-adjust\-warnings
+If \fB\-\-adjust\-section\-vma\fP is used, and the named section does
+not exist, issue a warning. This is the default.
+.TP
+.B \fB\-\-no\-adjust\-warnings
+Do not issue a warning if \fB\-\-adjust\-section\-vma\fP is used, even
+if the named section does not exist.
+.TP
+.B \fB\-\-set\-section\-flags=\fIsection=flags
+Set the flags for the named section. The \fIflags\fP argument is a
+comma separated string of flag names. The recognized names are
+\fIalloc\fP, \fIload\fP, \fIreadonly\fP, \fIcode\fP, \fIdata\fP, and
+\fIrom\fP. Not all flags are meaningful for all object file
+formats.
+.TP
+.B \fB\-\-add\-section=\fIsectionname=filename
+Add a new section named \fIsectionname\fR while copying the file. The
+contents of the new section are taken from the file \fIfilename\fR.
+The size of the section will be the size of the file. This option
+only works on file formats which can support sections with arbitrary
+names.
+.TP
+.B \-\-change\-leading\-char
+Some object file formats use special characters at the start of
+symbols. The most common such character is underscore, which compilers
+often add before every symbol. This option tells
+.B objcopy
+to change the leading character of every symbol when it converts
+between object file formats. If the object file formats use the same
+leading character, this option has no effect. Otherwise, it will add
+a character, or remove a character, or change a character, as
+appropriate.
+.TP
+.B \-\-remove\-leading\-char
+If the first character of a global symbol is a special symbol leading
+character used by the object file format, remove the character. The
+most common symbol leading character is underscore. This option will
+remove a leading underscore from all global symbols. This can be
+useful if you want to link together objects of different file formats
+with different conventions for symbol names. This is different from
+@code{--change-leading-char} because it always changes the symbol name
+when appropriate, regardless of the object file format of the output
+.TP
+.B \-\-weaken
+Change all global symbols in the file to be weak.
+.TP
+.B \-v\fR, \fB\-\-verbose
Verbose output: list all object files modified. In the case of
archives, "\fBobjcopy \-V\fR" lists all members of the archive.
.TP
-.B \-V
-.TP
-.B \-\-version
+.B \-V\fR, \fB\-\-version
Show the version number of
.B objcopy
and exit.
\&, Roland H. Pesch (June 1993).
.SH COPYING
-Copyright (c) 1993 Free Software Foundation, Inc.
+Copyright (c) 1993, 94, 95, 96, 1997 Free Software Foundation, Inc.
.PP
Permission is granted to make and distribute verbatim copies of
this manual provided the copyright notice and this permission notice
projects / deliverable / binutils-gdb.git / blobdiff