into another language, under the above conditions for modified versions.
@end titlepage
-@node Top, ar, (dir), (dir)
+@node Top
+@top
@chapter Introduction
@cindex version
Generate index to archive contents
@item size
-List section sizes and total size
+List file section sizes and total size
@item strings
List printable strings from files
@item strip
Discard symbols
+
+@item c++filt
+Demangle encoded C++ symbols
+
+@item nlmconv
+Convert object code into a Netware Loadable Module
@end table
@end iftex
@menu
* ar:: Create, modify, and extract from archives
-* ld:(ld)Overview. Combine object and archive files
* nm:: List symbols from object files
* objcopy:: Copy and translate object files
* objdump:: Display information from object files
* strip:: Discard symbols
* c++filt:: Filter to demangle encoded C++ symbols
* nlmconv:: Converts object code into an NLM
+* Selecting The Target System:: How these utilities determine the target.
* Index::
@end menu
-@node ar, nm, Top, Top
+@node ar
@chapter ar
@kindex ar
program.
@menu
-* ar-cmdline:: Controlling @code{ar} on the command line
-* ar-scripts:: Controlling @code{ar} with a script
+* ar cmdline:: Controlling @code{ar} on the command line
+* ar scripts:: Controlling @code{ar} with a script
@end menu
@page
-@node ar-cmdline, ar-scripts, ar, ar
+@node ar cmdline
@section Controlling @code{ar} on the command line
@smallexample
This modifier shows the version number of @code{ar}.
@end table
-@node ar-scripts, , ar-cmdline, ar
+@node ar scripts
@section Controlling @code{ar} with a script
@smallexample
@xref{Top,, Overview,, Using LD: the GNU linker}.
@end iftex
-@node nm, objcopy, ar, Top
+@node nm
@chapter nm
@cindex symbols
@kindex nm
@item --target=@var{bfdname}
@cindex object code format
Specify an object code format other than your system's default format.
-@xref{objdump}, for information on listing available formats.
+@xref{Target Selection}, for more information.
@item -u
@itemx --undefined-only
Show a summary of the options to @code{nm} and exit.
@end table
-@node objcopy, objdump, nm, Top
+@node objcopy
@chapter objcopy
@smallexample
-objcopy [ -F @var{format} | --format=@var{format} ]
- [ -I @var{format} | --input-format=@var{format} ]
- [ -O @var{format} | --output-format=@var{format} ]
+objcopy [ -F @var{bfdname} | --target=@var{bfdname} ]
+ [ -I @var{bfdname} | --input-target=@var{bfdname} ]
+ [ -O @var{bfdname} | --output-target=@var{bfdname} ]
[ -S | --strip-all ] [ -g | --strip-debug ]
[ -x | --discard-all ] [ -X | --discard-locals ]
[ -v | --verbose ] [ -V | --version ] [ --help ]
deletes them afterward. @code{objcopy} uses BFD to do all its
translation work; it knows about all the formats BFD knows about, and
thus is able to recognize most formats without being told explicitly.
-@xref{BFD,,BFD,ld.info,Using LD, the GNU linker}.
+@xref{BFD,,BFD,ld.info,Using LD}.
@table @code
@item @var{infile}
temporary file and destructively renames the result with
the name of the input file.
-@item -I @var{format}
-@itemx --input-format=@var{format}
-Consider the source file's object format to be @var{format}, rather than
-attempting to deduce it.
+@item -I @var{bfdname}
+@itemx --input-target=@var{bfdname}
+Consider the source file's object format to be @var{bfdname}, rather than
+attempting to deduce it. @xref{Target Selection}, for more information.
-@item -O @var{format}
-@itemx --output-format=@var{format}
-Write the output file using the object format @var{format}.
+@item -O @var{bfdname}
+@itemx --output-target=@var{bfdname}
+Write the output file using the object format @var{bfdname}.
+@xref{Target Selection}, for more information.
-@item -F @var{format}
-@itemx --format=@var{format}
-Use @var{format} as the object format for both the input and the output
-file; i.e. simply transfer data from source to destination with no
-translation.
+@item -F @var{bfdname}
+@itemx --target=@var{bfdname}
+Use @var{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. @xref{Target Selection}, for more information.
@item -S
@itemx --strip-all
Show a summary of the options to @code{objcopy}.
@end table
-@node objdump, ranlib, objcopy, Top
+@node objdump
@chapter objdump
@cindex object file information
@kindex objdump
@smallexample
-objdump [ -a ] [ -b @var{bfdname} ] [ -d ] [ -f ]
- [ -h | --header ] [ -i ] [ -j @var{section} ] [ -l ]
- [ -m @var{machine} ] [ -r | --reloc ] [ -s ] [ --stabs ]
- [ -t | --syms ] [ -x ] [ --version ] [ --help ]
+objdump [ -a | --archive-headers ] [ -b @var{bfdname} | --target=@var{bfdname} ]
+ [ -d | --disassemble ] [ -f | --file-headers ]
+ [ -h | --section-headers | --headers ] [ -i | --info ]
+ [ -j @var{section} | --section=@var{section} ] [ -l | --line-numbers ]
+ [ -m @var{machine} | --architecture=@var{machine} ] [ -r | --reloc ]
+ [ -s | --full-contents ] [ --stabs ] [ -t | --syms ]
+ [ -x | --all-headers ] [ --version ] [ --help ]
@var{objfile}@dots{}
@end smallexample
@table @code
@item -a
-@c print_arelt_descr
+@itemx --archive-header
@cindex archive headers
If any of the @var{objfile} files are archives, display the archive
header information (in a format similar to @samp{ls -l}). Besides the
information you could list with @samp{ar tv}, @samp{objdump -a} shows
the object file format of each archive member.
-@c suggest longname --target or --format or --bfd
@item -b @var{bfdname}
+@itemx --target=@var{bfdname}
@cindex object code format
Specify that the object-code format for the object files is
@var{bfdname}. This option may not be necessary; @var{objdump} can
@file{fu.o}, which is explicitly identified (@samp{-m}) as a VAX object
file in the format produced by Oasys compilers. You can list the
formats available with the @samp{-i} option.
+@xref{Target Selection}, for more information.
@item -d
+@itemx --disassemble
@cindex disassembling object code
@cindex machine instructions
-Disassemble. Display the assembler mnemonics for the machine
+Display the assembler mnemonics for the machine
instructions from @var{objfile}.
@item -f
+@itemx --file-header
@cindex object file header
-File header. Display summary information from the overall header of
+Display summary information from the overall header of
each of the @var{objfile} files.
@item -h
+@itemx --section-header
@itemx --header
@cindex section headers
-Header. Display summary information from the section headers of the
+Display summary information from the section headers of the
object file.
@item --help
Print a summary of the options to @code{objdump} and exit.
@item -i
+@itemx --info
@cindex architectures available
@cindex object formats available
Display a list showing all architectures and object formats available
for specification with @samp{-b} or @samp{-m}.
-@c suggest longname --section
@item -j @var{name}
+@itemx --section=@var{name}
@cindex section information
Display information only for section @var{name}.
-@c suggest longname --label or --linespec
@item -l
+@itemx --line-numbers
@cindex source filenames for object files
-Label the display (using debugging information) with the source filename
-and line numbers corresponding to the object code shown.
+Label the display (using debugging information) with the filename
+and source line numbers corresponding to the object code shown.
+Only useful with @samp{-d}.
-@c suggest longname --architecture
@item -m @var{machine}
+@itemx --architecture=@var{machine}
@cindex architecture
Specify that the object files @var{objfile} are for architecture
@var{machine}. You can list available architectures using the @samp{-i}
@item -r
@itemx --reloc
@cindex relocation entries, in object file
-Relocation. Print the relocation entries of the file.
+Print the relocation entries of the file.
@item -s
+@itemx --full-contents
@cindex sections, full contents
@cindex object file sections
Display the full contents of any sections requested.
@item -t
@itemx --syms
@cindex symbol table entries, printing
-Symbol Table. Print the symbol table entries of the file.
+Print the symbol table entries of the file.
This is similar to the information provided by the @samp{nm} program.
@item --version
Print the version number of @code{objdump} and exit.
@item -x
+@itemx --all-header
@cindex all header information, object file
@cindex header information, all
Display all available header information, including the symbol table and
@samp{-a -f -h -r -t}.
@end table
-@node ranlib, size, objdump, Top
+@node ranlib
@chapter ranlib
@kindex ranlib
Show the version number of @code{ranlib}.
@end table
-@node size, strings, ranlib, Top
+@node size
@chapter size
@kindex size
Here is an example of the Berkeley (default) format of output from
@code{size}:
@smallexample
-size --format Berkeley ranlib size
+size --format=Berkeley ranlib size
text data bss dec hex filename
294880 81920 11592 388392 5ed28 ranlib
294880 81920 11888 388688 5ee50 size
This is the same data, but displayed closer to System V conventions:
@smallexample
-size --format SysV ranlib size
+size --format=SysV ranlib size
ranlib :
section size addr
.text 294880 8192
@cindex object code format
Specify that the object-code format for @var{objfile} is
@var{bfdname}. This option may not be necessary; @code{size} can
-automatically recognize many formats. @xref{objdump}, for information
-on listing available formats.
+automatically recognize many formats.
+@xref{Target Selection}, for more information.
@item -V
@itemx --version
Display the version number of @code{size}.
@end table
-@node strings, strip, size, Top
+@node strings
@chapter strings
@kindex strings
@cindex listings strings
@smallexample
strings [-afov] [-@var{min-len}] [-n @var{min-len}] [-t @var{radix}] [-]
[--all] [--print-file-name] [--bytes=@var{min-len}]
- [--radix=@var{radix}] [--help] [--version] @var{file}@dots{}
+ [--radix=@var{radix}] [--target=@var{bfdname}]
+ [--help] [--version] @var{file}@dots{}
@end smallexample
For each @var{file} given, GNU @code{strings} prints the printable
character argument specifies the radix of the offset---@samp{o} for
octal, @samp{x} for hexadecimal, or @samp{d} for decimal.
+@item --target=@var{bfdname}
+@cindex object code format
+Specify an object code format other than your system's default format.
+@xref{Target Selection}, for more information.
+
@item -v
@itemx --version
Print the program version number on the standard output and exit.
@end table
-@node strip, c++filt, strings, Top
+@node strip
@chapter strip
@kindex strip
@cindex symbols, discarding
@smallexample
-strip [ -F @var{format} | --format=@var{format} | --target=@var{format} ]
- [ -I @var{format} | --input-format=@var{format} ]
- [ -O @var{format} | --output-format=@var{format} ]
+strip [ -F @var{bfdname} | --target=@var{bfdname} | --target=@var{bfdname} ]
+ [ -I @var{bfdname} | --input-target=@var{bfdname} ]
+ [ -O @var{bfdname} | --output-target=@var{bfdname} ]
[ -s | --strip-all ] [ -S | -g | --strip-debug ]
[ -x | --discard-all ] [ -X | --discard-locals ]
[ -v | --verbose ] [ -V | --version ] [ --help ]
rather than writing modified copies under different names.
@table @code
-@item -F @var{format}
-@itemx --format=@var{format}
-@itemx --target=@var{format}
+@item -F @var{bfdname}
+@itemx --target=@var{bfdname}
Treat the original @var{objfile} as a file with the object
-code format @var{format}, and rewrite it in the same format.
+code format @var{bfdname}, and rewrite it in the same format.
+@xref{Target Selection}, for more information.
@item --help
Show a summary of the options to @code{strip} and exit.
-@item -I @var{format}
-@itemx --input-format=@var{format}
+@item -I @var{bfdname}
+@itemx --input-target=@var{bfdname}
Treat the original @var{objfile} as a file with the object
-code format @var{format}.
+code format @var{bfdname}.
+@xref{Target Selection}, for more information.
-@item -O @var{format}
-@itemx --output-format=@var{format}
-Replace @var{objfile} with a file in the output format @var{format}.
+@item -O @var{bfdname}
+@itemx --output-target=@var{bfdname}
+Replace @var{objfile} with a file in the output format @var{bfdname}.
+@xref{Target Selection}, for more information.
@item -s
@itemx --strip-all
archives, @samp{strip -v} lists all members of the archive.
@end table
-@node c++filt, nlmconv, strip, Top
+@node c++filt
@chapter c++filt
@kindex c++filt
@end example
@end quotation
-@node nlmconv, Index, c++filt, Top
+@node nlmconv
@chapter nlmconv
@code{nlmconv} converts a relocatable object file into a NetWare
@end quotation
@smallexample
-nlmconv [ -I @var{format} | --input-format=@var{format} ]
- [ -O @var{format} | --output-format=@var{format} ]
+nlmconv [ -I @var{bfdname} | --input-target=@var{bfdname} ]
+ [ -O @var{bfdname} | --output-target=@var{bfdname} ]
[ -T @var{headerfile} | --header-file=@var{headerfile} ]
[ -h | --help ] [ -V | --version ]
@var{infile} @var{outfile}
Development and Tools Overview}, which is part of the NLM Software
Developer's Kit (``NLM SDK''), available from Novell, Inc.
@code{nlmconv} uses the @sc{gnu} Binary File Descriptor library to read
-@var{infile}; see @ref{BFD,,BFD,ld.info,Using LD, the GNU linker}, for
+@var{infile}; see @ref{BFD,,BFD,ld.info,Using LD}, for
more information.
@table @code
-@item -I @var{format}
-@itemx --input-format=@var{format}
+@item -I @var{bfdname}
+@itemx --input-target=@var{bfdname}
Object format of the input file. @code{nlmconv} can usually determine
-the format of a given file (so no default is necessary). @var{format}
-arguments are normal BFD names; for a list of these, run
-@w{@samp{objdump -i}}.
+the format of a given file (so no default is necessary).
+@xref{Target Selection}, for more information.
-@item -O @var{format}
-@itemx --output-format=@var{format}
+@item -O @var{bfdname}
+@itemx --output-target=@var{bfdname}
Object format of the output file. @code{nlmconv} infers the output
format based on the input format, e.g. for a @samp{i386} input file the
-output format is @samp{nlm32-i386}. @var{format} arguments are normal
-BFD names; for a list of these, run @w{@samp{objdump -i}}.
+output format is @samp{nlm32-i386}.
+@xref{Target Selection}, for more information.
@item -T @var{headerfile}
@itemx --header-file=@var{headerfile}
Prints the version number for @code{nlmconv}.
@end table
-@node Index, , nlmconv, Top
+@node Selecting The Target System
+@chapter Selecting the target system
+
+You can specify three aspects of the target system to the GNU binary
+file utilities, each in several ways. The three aspects of the target
+system that you can specify are
+
+@itemize @bullet
+@item
+the target,
+
+@item
+the architecture, and
+
+@item
+the linker emulation (which applies to the linker only).
+@end itemize
+
+In the following summaries, the lists of ways to specify values are in
+order of decreasing precedence. In other words, the ways listed earlier
+override the ways listed later.
+
+The commands to list valid values only list the values that the programs
+you are running were configured for. If they were configured with
+@samp{--with-targets=all}, the commands list most of the available
+values, but a few are left out; not all targets can be configured in at
+once because some of them can only be compiled ``native'' (on hosts with
+the same type as the target system).
+
+@menu
+* Target Selection::
+* Architecture Selection::
+* Linker Emulation Selection::
+@end menu
+
+@node Target Selection
+@section Target selection
+
+A @dfn{target} is an object file format. A given target may be
+supported for multiple architectures (@pxref{Architecture Selection}).
+It may also have variations for different operating systems or architectures.
+
+Command to list valid values: @samp{objdump -i} (first column).
+
+Sample values: @samp{a.out-hp300bsd}, @samp{ecoff-littlemips}, @samp{a.out-sunos-big}.
+
+@menu
+* objdump Target::
+* objcopy strip Input Target::
+* objcopy strip Output Target::
+* nm size strings Target::
+* Linker Input Target::
+* Linker Output Target::
+@end menu
+
+@node objdump Target
+@subsection @code{objdump} target
+
+Ways to specify:
+
+@enumerate
+@item
+command line option @samp{-b}, @samp{--target}
+
+@item
+environment variable @code{GNUTARGET}
+
+@item
+deduced from the input file
+@end enumerate
+
+@node objcopy strip Input Target
+@subsection @code{objcopy} and @code{strip} input target
+
+Ways to specify:
+
+@enumerate
+@item
+command line option @samp{-I}, @samp{--input-target}, @samp{-F}, @samp{--target}
+
+@item
+environment variable @code{GNUTARGET}
+
+@item
+deduced from the input file
+@end enumerate
+
+@node objcopy strip Output Target
+@subsection @code{objcopy} and @code{strip} output target
+
+Ways to specify:
+
+@enumerate
+@item
+command line option @samp{-O}, @samp{-F}, @samp{--output-target}, @samp{--target}
+
+@item
+the input target (@pxref{objcopy strip Input Target})
+
+@item
+environment variable @code{GNUTARGET}
+
+@item
+deduced from the input file
+@end enumerate
+
+@node nm size strings Target
+@subsection @code{nm}, @code{size}, and @code{strings} target
+
+Ways to specify:
+
+@enumerate
+@item
+command line option @samp{--target}
+
+@item
+environment variable @code{GNUTARGET}
+
+@item
+deduced from the input file
+@end enumerate
+
+@node Linker Input Target
+@subsection Linker input target
+
+Ways to specify:
+
+@enumerate
+@item
+command line option @samp{-b}, @samp{-format}
+(@pxref{Options,,Options,ld.info,Using LD})
+
+@item
+script command @code{TARGET}
+(@pxref{Option Commands,,Option Commands,ld.info,Using LD})
+
+@item
+environment variable @code{GNUTARGET}
+(@pxref{Environment,,Environment,ld.info,Using LD})
+
+@item
+the default target of the selected linker emulation
+(@pxref{Linker Emulation Selection})
+@end enumerate
+
+@node Linker Output Target
+@subsection Linker output target
+
+Ways to specify:
+
+@enumerate
+@item
+command line option @samp{-oformat}
+(@pxref{Options,,Options,ld.info,Using LD})
+
+@item
+script command @code{OUTPUT_FORMAT}
+(@pxref{Option Commands,,Option Commands,ld.info,Using LD})
+
+@item
+the linker input target (@pxref{Linker Input Target})
+@end enumerate
+
+@node Architecture Selection
+@section Architecture selection
+
+An @dfn{architecture} is a type of CPU on which an object file is to
+run. Its name may contain a colon, separating the name of the
+processor family from the name of the particular CPU.
+
+Command to list valid values: @samp{objdump -i} (second column).
+
+Sample values: @samp{m68k:68020}, @samp{mips:3000}, @samp{sparc}.
+
+@menu
+* objdump Architecture::
+* objcopy nm size strings Architecture::
+* Linker Input Architecture::
+* Linker Output Architecture::
+@end menu
+
+@node objdump Architecture
+@subsection @code{objdump} architecture
+
+Ways to specify:
+
+@enumerate
+@item
+command line option @samp{-m}, @samp{--architecture}
+
+@item
+deduced from the input file
+@end enumerate
+
+@node objcopy nm size strings Architecture
+@subsection @code{objcopy}, @code{nm}, @code{size}, @code{strings} architecture
+
+Ways to specify:
+
+@enumerate
+@item
+deduced from the input file
+@end enumerate
+
+@node Linker Input Architecture
+@subsection Linker input architecture
+
+Ways to specify:
+
+@enumerate
+@item
+deduced from the input file
+@end enumerate
+
+@node Linker Output Architecture
+@subsection Linker output architecture
+
+Ways to specify:
+
+@enumerate
+@item
+script command @code{OUTPUT_ARCH}
+(@pxref{Option Commands,,Option Commands,ld.info,Using LD})
+
+@item
+the default architecture from the linker output target
+(@pxref{Linker Output Target})
+@end enumerate
+
+@node Linker Emulation Selection
+@section Linker emulation selection
+
+A linker @dfn{emulation} is a ``personality'' of the linker, which gives
+the linker default values for the other aspects of the target system.
+In particular, it consists of
+
+@itemize @bullet
+@item
+the linker script,
+
+@item
+the target, and
+
+@item
+several ``hook'' functions that are run at certain stages of the linking
+process to do special things that some targets require.
+@end itemize
+
+Command to list valid values: @samp{ld -V}.
+
+Sample values: @samp{hp300bsd}, @samp{mipslit}, @samp{sun4}.
+
+Ways to specify:
+
+@enumerate
+@item
+command line option @samp{-m}
+(@pxref{Options,,Options,ld.info,Using LD})
+
+@item
+environment variable @code{LDEMULATION}
+
+@item
+compiled-in @code{DEFAULT_EMULATION} from @file{Makefile},
+which comes from @code{EMUL} in @file{config/@var{target}.mt}
+@end enumerate
+
+@node Index
@unnumbered Index
@printindex cp
projects / binutils-gdb.git / commitdiff