# objdump

## NAME



           objdump - display information from object files
    


## SYNOPSIS



           objdump [**-a** |**--archive-headers**]
                   [**-b** _bfdname_ |**--target=**_bfdname_]
                   [**-C** |**--demangle**[=_style_] ]
                   [**-d** |**--disassemble**[=_symbol_]]
                   [**-D** |**--disassemble-all**]
                   [**-z** |**--disassemble-zeroes**]
                   [**-EB** |**-EL** |**--endian=**{big | little }]
                   [**-f** |**--file-headers**]
                   [**-F** |**--file-offsets**]
                   [**--file-start-context**]
                   [**-g** |**--debugging**]
                   [**-e** |**--debugging-tags**]
                   [**-h** |**--section-headers** |**--headers**]
                   [**-i** |**--info**]
                   [**-j** _section_ |**--section=**_section_]
                   [**-l** |**--line-numbers**]
                   [**-S** |**--source**]
                   [**--source-comment**[=_text_]]
                   [**-m** _machine_ |**--architecture=**_machine_]
                   [**-M** _options_ |**--disassembler-options=**_options_]
                   [**-p** |**--private-headers**]
                   [**-P** _options_ |**--private=**_options_]
                   [**-r** |**--reloc**]
                   [**-R** |**--dynamic-reloc**]
                   [**-s** |**--full-contents**]
                   [**-Z** |**--decompress**]
                   [**-W[lLiaprmfFsoORtUuTgAck]** |
                    **--dwarf**[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links]]
                   [**-WK** |**--dwarf=follow-links**]
                   [**-WN** |**--dwarf=no-follow-links**]
                   [**-wD** |**--dwarf=use-debuginfod**]
                   [**-wE** |**--dwarf=do-not-use-debuginfod**]
                   [**-L** |**--process-links**]
                   [**--ctf=**_section_]
                   [**--sframe=**_section_]
                   [**-G** |**--stabs**]
                   [**-t** |**--syms**]
                   [**-T** |**--dynamic-syms**]
                   [**-x** |**--all-headers**]
                   [**-w** |**--wide**]
                   [**--start-address=**_address_]
                   [**--stop-address=**_address_]
                   [**--no-addresses**]
                   [**--prefix-addresses**]
                   [**--[no-]show-raw-insn**]
                   [**--adjust-vma=**_offset_]
                   [**--show-all-symbols**]
                   [**--dwarf-depth=**_n_]
                   [**--dwarf-start=**_n_]
                   [**--ctf-parent=**_section_]
                   [**--no-recurse-limit** |**--recurse-limit**]
                   [**--special-syms**]
                   [**--prefix=**_prefix_]
                   [**--prefix-strip=**_level_]
                   [**--insn-width=**_width_]
                   [**--visualize-jumps[=color|=extended-color|=off]**
                   [**--disassembler-color=[off|terminal|on|extended]**
                   [**-U** _method_] [**--unicode=**_method_]
                   [**-V** |**--version**]
                   [**-H** |**--help**]
                   _objfile_...
    


## DESCRIPTION



           **objdump** displays information about one or more object files.  The
           options control what particular information to display.  This
           information is mostly useful to programmers who are working on the
           compilation tools, as opposed to programmers who just want their
           program to compile and work.
    
           _objfile_... are the object files to be examined.  When you specify
           archives, **objdump** shows information on each of the member object
           files.
    


## OPTIONS



           The long and short forms of options, shown here as alternatives,
           are equivalent.  At least one option from the list
           **-a,-d,-D,-e,-f,-g,-G,-h,-H,-p,-P,-r,-R,-s,-S,-t,-T,-V,-x** must be
           given.
    
           **-a**
           **--archive-header**
               If any of the _objfile_ files are archives, display the archive
               header information (in a format similar to **ls -l**).  Besides
               the information you could list with **ar tv** , **objdump -a** shows
               the object file format of each archive member.
    
           **--adjust-vma=**_offset_
               When dumping information, first add _offset_ to all the section
               addresses.  This is useful if the section addresses do not
               correspond to the symbol table, which can happen when putting
               sections at particular addresses when using a format which can
               not represent section addresses, such as a.out.
    
           **-b** _bfdname_
           **--target=**_bfdname_
               Specify that the object-code format for the object files is
               _bfdname_.  This option may not be necessary; _objdump_ can
               automatically recognize many formats.
    
               For example,
    
                       objdump -b oasys -m vax -h fu.o
    
               displays summary information from the section headers (**-h**) of
               _fu.o_ , which is explicitly identified (**-m**) as a VAX object file
               in the format produced by Oasys compilers.  You can list the
               formats available with the **-i** option.
    
           **-C**
           **--demangle[=**_style_**]**
               Decode (_demangle_) low-level symbol names into user-level
               names.  Besides removing any initial underscore prepended by
               the system, this makes C++ function names readable.  Different
               compilers have different mangling styles. The optional
               demangling style argument can be used to choose an appropriate
               demangling style for your compiler.
    
           **--recurse-limit**
           **--no-recurse-limit**
           **--recursion-limit**
           **--no-recursion-limit**
               Enables or disables a limit on the amount of recursion
               performed whilst demangling strings.  Since the name mangling
               formats allow for an infinite level of recursion it is
               possible to create strings whose decoding will exhaust the
               amount of stack space available on the host machine,
               triggering a memory fault.  The limit tries to prevent this
               from happening by restricting recursion to 2048 levels of
               nesting.
    
               The default is for this limit to be enabled, but disabling it
               may be necessary in order to demangle truly complicated names.
               Note however that if the recursion limit is disabled then
               stack exhaustion is possible and any bug reports about such an
               event will be rejected.
    
           **-g**
           **--debugging**
               Display debugging information.  This attempts to parse STABS
               debugging format information stored in the file and print it
               out using a C like syntax.  If no STABS debugging was found
               this option falls back on the **-W** option to print any DWARF
               information in the file.
    
           **-e**
           **--debugging-tags**
               Like **-g** , but the information is generated in a format
               compatible with ctags tool.
    
           **-d**
           **--disassemble**
           **--disassemble=**_symbol_
               Display the assembler mnemonics for the machine instructions
               from the input file.  This option only disassembles those
               sections which are expected to contain instructions.  If the
               optional _symbol_ argument is given, then display the assembler
               mnemonics starting at _symbol_.  If _symbol_ is a function name
               then disassembly will stop at the end of the function,
               otherwise it will stop when the next symbol is encountered.
               If there are no matches for _symbol_ then nothing will be
               displayed.
    
               Note if the **--dwarf=follow-links** option is enabled then any
               symbol tables in linked debug info files will be read in and
               used when disassembling.
    
           **-D**
           **--disassemble-all**
               Like **-d** , but disassemble the contents of all non-empty non-bss
               sections, not just those expected to contain instructions.  **-j**
               may be used to select specific sections.
    
               This option also has a subtle effect on the disassembly of
               instructions in code sections.  When option **-d** is in effect
               objdump will assume that any symbols present in a code section
               occur on the boundary between instructions and it will refuse
               to disassemble across such a boundary.  When option **-D** is in
               effect however this assumption is supressed.  This means that
               it is possible for the output of **-d** and **-D** to differ if, for
               example, data is stored in code sections.
    
               If the target is an ARM architecture this switch also has the
               effect of forcing the disassembler to decode pieces of data
               found in code sections as if they were instructions.
    
               Note if the **--dwarf=follow-links** option is enabled then any
               symbol tables in linked debug info files will be read in and
               used when disassembling.
    
           **--no-addresses**
               When disassembling, don't print addresses on each line or for
               symbols and relocation offsets.  In combination with
               **--no-show-raw-insn** this may be useful for comparing compiler
               output.
    
           **--prefix-addresses**
               When disassembling, print the complete address on each line.
               This is the older disassembly format.
    
           **-EB**
           **-EL**
           **--endian={big|little}**
               Specify the endianness of the object files.  This only affects
               disassembly.  This can be useful when disassembling a file
               format which does not describe endianness information, such as
               S-records.
    
           **-f**
           **--file-headers**
               Display summary information from the overall header of each of
               the _objfile_ files.
    
           **-F**
           **--file-offsets**
               When disassembling sections, whenever a symbol is displayed,
               also display the file offset of the region of data that is
               about to be dumped.  If zeroes are being skipped, then when
               disassembly resumes, tell the user how many zeroes were
               skipped and the file offset of the location from where the
               disassembly resumes.  When dumping sections, display the file
               offset of the location from where the dump starts.
    
           **--file-start-context**
               Specify that when displaying interlisted source
               code/disassembly (assumes **-S**) from a file that has not yet
               been displayed, extend the context to the start of the file.
    
           **-h**
           **--section-headers**
           **--headers**
               Display summary information from the section headers of the
               object file.
    
               File segments may be relocated to nonstandard addresses, for
               example by using the **-Ttext** , **-Tdata** , or **-Tbss** options to **ld**.
               However, some object file formats, such as a.out, do not store
               the starting address of the file segments.  In those
               situations, although **ld** relocates the sections correctly,
               using **objdump -h** to list the file section headers cannot show
               the correct addresses.  Instead, it shows the usual addresses,
               which are implicit for the target.
    
               Note, in some cases it is possible for a section to have both
               the READONLY and the NOREAD attributes set.  In such cases the
               NOREAD attribute takes precedence, but **objdump** will report
               both since the exact setting of the flag bits might be
               important.
    
           **-H**
           **--help**
               Print a summary of the options to **objdump** and exit.
    
           **-i**
           **--info**
               Display a list showing all architectures and object formats
               available for specification with **-b** or **-m**.
    
           **-j** _name_
           **--section=**_name_
               Display information for section _name_.  This option may be
               specified multiple times.
    
           **-L**
           **--process-links**
               Display the contents of non-debug sections found in separate
               debuginfo files that are linked to the main file.  This option
               automatically implies the **-WK** option, and only sections
               requested by other command line options will be displayed.
    
           **-l**
           **--line-numbers**
               Label the display (using debugging information) with the
               filename and source line numbers corresponding to the object
               code or relocs shown.  Only useful with **-d** , **-D** , or **-r**.
    
           **-m** _machine_
           **--architecture=**_machine_
               Specify the architecture to use when disassembling object
               files.  This can be useful when disassembling object files
               which do not describe architecture information, such as
               S-records.  You can list the available architectures with the
               **-i** option.
    
               For most architectures it is possible to supply an
               architecture name and a machine name, separated by a colon.
               For example **foo:bar** would refer to the **bar** machine type in the
               **foo** architecture.  This can be helpful if objdump has been
               configured to support multiple architectures.
    
               If the target is an ARM architecture then this switch has an
               additional effect.  It restricts the disassembly to only those
               instructions supported by the architecture specified by
               _machine_.  If it is necessary to use this switch because the
               input file does not contain any architecture information, but
               it is also desired to disassemble all the instructions use
               **-marm**.
    
           **-M** _options_
           **--disassembler-options=**_options_
               Pass target specific information to the disassembler.  Only
               supported on some targets.  If it is necessary to specify more
               than one disassembler option then multiple **-M** options can be
               used or can be placed together into a comma separated list.
    
               For ARC, **dsp** controls the printing of DSP instructions, **spfp**
               selects the printing of FPX single precision FP instructions,
               **dpfp** selects the printing of FPX double precision FP
               instructions, **quarkse_em** selects the printing of special
               QuarkSE-EM instructions, **fpuda** selects the printing of double
               precision assist instructions, **fpus** selects the printing of
               FPU single precision FP instructions, while **fpud** selects the
               printing of FPU double precision FP instructions.
               Additionally, one can choose to have all the immediates
               printed in hexadecimal using **hex**.  By default, the short
               immediates are printed using the decimal representation, while
               the long immediate values are printed as hexadecimal.
    
               **cpu=...** allows one to enforce a particular ISA when
               disassembling instructions, overriding the **-m** value or
               whatever is in the ELF file.  This might be useful to select
               ARC EM or HS ISA, because architecture is same for those and
               disassembler relies on private ELF header data to decide if
               code is for EM or HS.  This option might be specified multiple
               times - only the latest value will be used.  Valid values are
               same as for the assembler **-mcpu=...** option.
    
               If the target is an ARM architecture then this switch can be
               used to select which register name set is used during
               disassembler.  Specifying **-M reg-names-std**(the default) will
               select the register names as used in ARM's instruction set
               documentation, but with register 13 called 'sp', register 14
               called 'lr' and register 15 called 'pc'.  Specifying **-M**
               **reg-names-apcs** will select the name set used by the ARM
               Procedure Call Standard, whilst specifying **-M reg-names-raw**
               will just use **r** followed by the register number.
    
               There are also two variants on the APCS register naming scheme
               enabled by **-M reg-names-atpcs** and **-M reg-names-special-atpcs**
               which use the ARM/Thumb Procedure Call Standard naming
               conventions.  (Either with the normal register names or the
               special register names).
    
               This option can also be used for ARM architectures to force
               the disassembler to interpret all instructions as Thumb
               instructions by using the switch
               **--disassembler-options=force-thumb**.  This can be useful when
               attempting to disassemble thumb code produced by other
               compilers.
    
               For AArch64 targets this switch can be used to set whether
               instructions are disassembled as the most general instruction
               using the **-M no-aliases** option or whether instruction notes
               should be generated as comments in the disasssembly using **-M**
               **notes**.
    
               For the x86, some of the options duplicate functions of the **-m**
               switch, but allow finer grained control.
    
               "x86-64"
               "i386"
               "i8086"
                   Select disassembly for the given architecture.
    
               "intel"
               "att"
                   Select between intel syntax mode and AT&T syntax mode.
    
               "amd64"
               "intel64"
                   Select between AMD64 ISA and Intel64 ISA.
    
               "intel-mnemonic"
               "att-mnemonic"
                   Select between intel mnemonic mode and AT&T mnemonic mode.
                   Note: "intel-mnemonic" implies "intel" and "att-mnemonic"
                   implies "att".
    
               "addr64"
               "addr32"
               "addr16"
               "data32"
               "data16"
                   Specify the default address size and operand size.  These
                   five options will be overridden if "x86-64", "i386" or
                   "i8086" appear later in the option string.
    
               "suffix"
                   When in AT&T mode and also for a limited set of
                   instructions when in Intel mode, instructs the
                   disassembler to print a mnemonic suffix even when the
                   suffix could be inferred by the operands or, for certain
                   instructions, the execution mode's defaults.
    
               For PowerPC, the **-M** argument **raw** selects disasssembly of
               hardware insns rather than aliases.  For example, you will see
               "rlwinm" rather than "clrlwi", and "addi" rather than "li".
               All of the **-m** arguments for **gas** that select a CPU are
               supported.  These are: **403** , **405** , **440** , **464** , **476** , **601** , **603** , **604** ,
               **620** , **7400** , **7410** , **7450** , **7455** , **750cl** , **821** , **850** , **860** , **a2** , **booke** ,
               **booke32** , **cell** , **com** , **e200z2** , **e200z4** , **e300** , **e500** , **e500mc** ,
               **e500mc64** , **e500x2** , **e5500** , **e6500** , **efs** , **power4** , **power5** , **power6** ,
               **power7** , **power8** , **power9** , **power10** , **power11** , **ppc** , **ppc32** , **ppc64** ,
               **ppc64bridge** , **ppcps** , **pwr** , **pwr2** , **pwr4** , **pwr5** , **pwr5x** , **pwr6** , **pwr7** ,
               **pwr8** , **pwr9** , **pwr10** , **pwr11** , **pwrx** , **titan** , **vle** , and **future**.  **32**
               and **64** modify the default or a prior CPU selection, disabling
               and enabling 64-bit insns respectively.  In addition, **altivec** ,
               **any** , **lsp** , **htm** , **vsx** , **spe** and  **spe2** add capabilities to a
               previous _or later_ CPU selection.  **any** will disassemble any
               opcode known to binutils, but in cases where an opcode has two
               different meanings or different arguments, you may not see the
               disassembly you expect.  If you disassemble without giving a
               CPU selection, a default will be chosen from information
               gleaned by BFD from the object files headers, but the result
               again may not be as you expect.
    
               For MIPS, this option controls the printing of instruction
               mnemonic names and register names in disassembled
               instructions.  Multiple selections from the following may be
               specified as a comma separated string, and invalid options are
               ignored:
    
               "no-aliases"
                   Print the 'raw' instruction mnemonic instead of some
                   pseudo instruction mnemonic.  I.e., print 'daddu' or 'or'
                   instead of 'move', 'sll' instead of 'nop', etc.
    
               "msa"
                   Disassemble MSA instructions.
    
               "virt"
                   Disassemble the virtualization ASE instructions.
    
               "xpa"
                   Disassemble the eXtended Physical Address (XPA) ASE
                   instructions.
    
               "gpr-names=_ABI_ "
                   Print GPR (general-purpose register) names as appropriate
                   for the specified ABI.  By default, GPR names are selected
                   according to the ABI of the binary being disassembled.
    
               "fpr-names=_ABI_ "
                   Print FPR (floating-point register) names as appropriate
                   for the specified ABI.  By default, FPR numbers are
                   printed rather than names.
    
               "cp0-names=_ARCH_ "
                   Print CP0 (system control coprocessor; coprocessor 0)
                   register names as appropriate for the CPU or architecture
                   specified by _ARCH_.  By default, CP0 register names are
                   selected according to the architecture and CPU of the
                   binary being disassembled.
    
               "hwr-names=_ARCH_ "
                   Print HWR (hardware register, used by the "rdhwr"
                   instruction) names as appropriate for the CPU or
                   architecture specified by _ARCH_.  By default, HWR names are
                   selected according to the architecture and CPU of the
                   binary being disassembled.
    
               "reg-names=_ABI_ "
                   Print GPR and FPR names as appropriate for the selected
                   ABI.
    
               "reg-names=_ARCH_ "
                   Print CPU-specific register names (CP0 register and HWR
                   names) as appropriate for the selected CPU or
                   architecture.
    
               For any of the options listed above, _ABI_ or _ARCH_ may be
               specified as **numeric** to have numbers printed rather than
               names, for the selected types of registers.  You can list the
               available values of _ABI_ and _ARCH_ using the **--help** option.
    
               For VAX, you can specify function entry addresses with **-M**
               **entry:0xf00ba**.  You can use this multiple times to properly
               disassemble VAX binary files that don't contain symbol tables
               (like ROM dumps).  In these cases, the function entry mask
               would otherwise be decoded as VAX instructions, which would
               probably lead the rest of the function being wrongly
               disassembled.
    
           **-p**
           **--private-headers**
               Print information that is specific to the object file format.
               The exact information printed depends upon the object file
               format.  For some object file formats, no additional
               information is printed.
    
           **-P** _options_
           **--private=**_options_
               Print information that is specific to the object file format.
               The argument _options_ is a comma separated list that depends on
               the format (the lists of options is displayed with the help).
    
               For XCOFF, the available options are:
    
               "header"
               "aout"
               "sections"
               "syms"
               "relocs"
               "lineno,"
               "loader"
               "except"
               "typchk"
               "traceback"
               "toc"
               "ldinfo"
    
               For PE, the available options are:
    
               "header"
               "sections"
    
               Not all object formats support this option.  In particular the
               ELF format does not use it.
    
           **-r**
           **--reloc**
               Print the relocation entries of the file.  If used with **-d** or
               **-D** , the relocations are printed interspersed with the
               disassembly.
    
           **-R**
           **--dynamic-reloc**
               Print the dynamic relocation entries of the file.  This is
               only meaningful for dynamic objects, such as certain types of
               shared libraries.  As for **-r** , if used with **-d** or **-D** , the
               relocations are printed interspersed with the disassembly.
    
           **-s**
           **--full-contents**
               Display the full contents of sections, often used in
               combination with **-j** to request specific sections.  By default
               all non-empty non-bss sections are displayed.  By default any
               compressed section will be displayed in its compressed form.
               In order to see the contents in a decompressed form add the **-Z**
               option to the command line.
    
           **-S**
           **--source**
               Display source code intermixed with disassembly, if possible.
               Implies **-d**.
    
           **--show-all-symbols**
               When disassembling, show all the symbols that match a given
               address, not just the first one.
    
           **--source-comment[=**_txt_**]**
               Like the **-S** option, but all source code lines are displayed
               with a prefix of _txt_.  Typically _txt_ will be a comment string
               which can be used to distinguish the assembler code from the
               source code.  If _txt_ is not provided then a default string of
               _"# "_ (hash followed by a space), will be used.
    
           **--prefix=**_prefix_
               Specify _prefix_ to add to the absolute paths when used with **-S**.
    
           **--prefix-strip=**_level_
               Indicate how many initial directory names to strip off the
               hardwired absolute paths. It has no effect without
               **--prefix=**_prefix_.
    
           **--show-raw-insn**
               When disassembling instructions, print the instruction in hex
               as well as in symbolic form.  This is the default except when
               **--prefix-addresses** is used.
    
           **--no-show-raw-insn**
               When disassembling instructions, do not print the instruction
               bytes.  This is the default when **--prefix-addresses** is used.
    
           **--insn-width=**_width_
               Display _width_ bytes on a single line when disassembling
               instructions.
    
           **--visualize-jumps[=color|=extended-color|=off]**
               Visualize jumps that stay inside a function by drawing ASCII
               art between the start and target addresses.  The optional
               **=color** argument adds color to the output using simple terminal
               colors.  Alternatively the **=extended-color** argument will add
               color using 8bit colors, but these might not work on all
               terminals.
    
               If it is necessary to disable the **visualize-jumps** option after
               it has previously been enabled then use **visualize-jumps=off**.
    
           **--disassembler-color=off**
           **--disassembler-color=terminal**
           **--disassembler-color=on|color|colour**
           **--disassembler-color=extened|extended-color|extened-colour**
               Enables or disables the use of colored syntax highlighting in
               disassembly output.  The default behaviour is determined via a
               configure time option.  Note, not all architectures support
               colored syntax highlighting, and depending upon the terminal
               used, colored output may not actually be legible.
    
               The **on** argument adds colors using simple terminal colors.
    
               The **terminal** argument does the same, but only if the output
               device is a terminal.
    
               The **extended-color** argument is similar to the **on** argument, but
               it uses 8-bit colors.  These may not work on all terminals.
    
               The **off** argument disables colored disassembly.
    
           **-W[lLiaprmfFsoORtUuTgAckK]**
           **--dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links,=follow-links]**
               Displays the contents of the DWARF debug sections in the file,
               if any are present.  Compressed debug sections are
               automatically decompressed (temporarily) before they are
               displayed.  If one or more of the optional letters or words
               follows the switch then only those type(s) of data will be
               dumped.  The letters and words refer to the following
               information:
    
               "a"
               "=abbrev"
                   Displays the contents of the **.debug_abbrev** section.
    
               "A"
               "=addr"
                   Displays the contents of the **.debug_addr** section.
    
               "c"
               "=cu_index"
                   Displays the contents of the **.debug_cu_index** and/or
                   **.debug_tu_index** sections.
    
               "f"
               "=frames"
                   Display the raw contents of a **.debug_frame** section.
    
               "F"
               "=frames-interp"
                   Display the interpreted contents of a **.debug_frame**
                   section.
    
               "g"
               "=gdb_index"
                   Displays the contents of the **.gdb_index** and/or
                   **.debug_names** sections.
    
               "i"
               "=info"
                   Displays the contents of the **.debug_info** section.  Note:
                   the output from this option can also be restricted by the
                   use of the **--dwarf-depth** and **--dwarf-start** options.
    
               "k"
               "=links"
                   Displays the contents of the **.gnu_debuglink** ,
                   **.gnu_debugaltlink** and **.debug_sup** sections, if any of them
                   are present.  Also displays any links to separate dwarf
                   object files (dwo), if they are specified by the
                   DW_AT_GNU_dwo_name or DW_AT_dwo_name attributes in the
                   **.debug_info** section.
    
               "K"
               "=follow-links"
                   Display the contents of any selected debug sections that
                   are found in linked, separate debug info file(s).  This
                   can result in multiple versions of the same debug section
                   being displayed if it exists in more than one file.
    
                   In addition, when displaying DWARF attributes, if a form
                   is found that references the separate debug info file,
                   then the referenced contents will also be displayed.
    
                   Note - in some distributions this option is enabled by
                   default.  It can be disabled via the **N** debug option.  The
                   default can be chosen when configuring the binutils via
                   the **--enable-follow-debug-links=yes** or
                   **--enable-follow-debug-links=no** options.  If these are not
                   used then the default is to enable the following of debug
                   links.
    
                   Note - if support for the debuginfod protocol was enabled
                   when the binutils were built then this option will also
                   include an attempt to contact any debuginfod servers
                   mentioned in the _DEBUGINFOD_URLS_ environment variable.
                   This could take some time to resolve.  This behaviour can
                   be disabled via the **=do-not-use-debuginfod** debug option.
    
               "N"
               "=no-follow-links"
                   Disables the following of links to separate debug info
                   files.
    
               "D"
               "=use-debuginfod"
                   Enables contacting debuginfod servers if there is a need
                   to follow debug links.  This is the default behaviour.
    
               "E"
               "=do-not-use-debuginfod"
                   Disables contacting debuginfod servers when there is a
                   need to follow debug links.
    
               "l"
               "=rawline"
                   Displays the contents of the **.debug_line** section in a raw
                   format.
    
               "L"
               "=decodedline"
                   Displays the interpreted contents of the **.debug_line**
                   section.
    
               "m"
               "=macro"
                   Displays the contents of the **.debug_macro** and/or
                   **.debug_macinfo** sections.
    
               "o"
               "=loc"
                   Displays the contents of the **.debug_loc** and/or
                   **.debug_loclists** sections.
    
               "O"
               "=str-offsets"
                   Displays the contents of the **.debug_str_offsets** section.
    
               "p"
               "=pubnames"
                   Displays the contents of the **.debug_pubnames** and/or
                   **.debug_gnu_pubnames** sections.
    
               "r"
               "=aranges"
                   Displays the contents of the **.debug_aranges** section.
    
               "R"
               "=Ranges"
                   Displays the contents of the **.debug_ranges** and/or
                   **.debug_rnglists** sections.
    
               "s"
               "=str"
                   Displays the contents of the **.debug_str** , **.debug_line_str**
                   and/or **.debug_str_offsets** sections.
    
               "t"
               "=pubtype"
                   Displays the contents of the **.debug_pubtypes** and/or
                   **.debug_gnu_pubtypes** sections.
    
               "T"
               "=trace_aranges"
                   Displays the contents of the **.trace_aranges** section.
    
               "u"
               "=trace_abbrev"
                   Displays the contents of the **.trace_abbrev** section.
    
               "U"
               "=trace_info"
                   Displays the contents of the **.trace_info** section.
    
               Note: displaying the contents of **.debug_static_funcs** ,
               **.debug_static_vars** and **debug_weaknames** sections is not
               currently supported.
    
           **--dwarf-depth=**_n_
               Limit the dump of the ".debug_info" section to _n_ children.
               This is only useful with **--debug-dump=info**.  The default is to
               print all DIEs; the special value 0 for _n_ will also have this
               effect.
    
               With a non-zero value for _n_ , DIEs at or deeper than _n_ levels
               will not be printed.  The range for _n_ is zero-based.
    
           **--dwarf-start=**_n_
               Print only DIEs beginning with the DIE numbered _n_.  This is
               only useful with **--debug-dump=info**.
    
               If specified, this option will suppress printing of any header
               information and all DIEs before the DIE numbered _n_.  Only
               siblings and children of the specified DIE will be printed.
    
               This can be used in conjunction with **--dwarf-depth**.
    
           **--dwarf-check**
               Enable additional checks for consistency of Dwarf information.
    
           **--ctf[=**_section_**]**
               Display the contents of the specified CTF section.  CTF
               sections themselves contain many subsections, all of which are
               displayed in order.
    
               By default, display the name of the section named _.ctf_ , which
               is the name emitted by **ld**.
    
           **--ctf-parent=**_member_
               If the CTF section contains ambiguously-defined types, it will
               consist of an archive of many CTF dictionaries, all inheriting
               from one dictionary containing unambiguous types.  This member
               is by default named _.ctf_ , like the section containing it, but
               it is possible to change this name using the
               "ctf_link_set_memb_name_changer" function at link time.  When
               looking at CTF archives that have been created by a linker
               that uses the name changer to rename the parent archive
               member, **--ctf-parent** can be used to specify the name used for
               the parent.
    
           **--ctf-parent-section=**_section_
               This option lets you pick a completely different section for
               the CTF parent dictionary containing unambiguous types than
               for the child dictionaries that contain the ambiguous
               remainder.  The linker does not emit ELF objects structured
               like this, but some third-party linkers may.  It's also
               convenient to inspect CTF written out as multiple raw files to
               compose them with objcopy, which can put them in different ELF
               sections but not in different members of a single CTF dict.
    
           **--sframe[=**_section_**]**
               Display the contents of the specified SFrame section.
    
               By default, display the name of the section named _.sframe_ ,
               which is the name emitted by **ld**.
    
           **-G**
           **--stabs**
               Display the full contents of any sections requested.  Display
               the contents of the .stab and .stab.index and .stab.excl
               sections from an ELF file.  This is only useful on systems
               (such as Solaris 2.0) in which ".stab" debugging symbol-table
               entries are carried in an ELF section.  In most other file
               formats, debugging symbol-table entries are interleaved with
               linkage symbols, and are visible in the **--syms** output.
    
           **--start-address=**_address_
               Start displaying data at the specified address.  This affects
               the output of the **-d** , **-r** and **-s** options.
    
           **--stop-address=**_address_
               Stop displaying data at the specified address.  This affects
               the output of the **-d** , **-r** and **-s** options.
    
           **-t**
           **--syms**
               Print the symbol table entries of the file.  This is similar
               to the information provided by the **nm** program, although the
               display format is different.  The format of the output depends
               upon the format of the file being dumped, but there are two
               main types.  One looks like this:
    
                       [  4](sec  3)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .bss
                       [  6](sec  1)(fl 0x00)(ty   0)(scl   2) (nx 0) 0x00000000 fred
    
               where the number inside the square brackets is the number of
               the entry in the symbol table, the _sec_ number is the section
               number, the _fl_ value are the symbol's flag bits, the _ty_ number
               is the symbol's type, the _scl_ number is the symbol's storage
               class and the _nx_ value is the number of auxiliary entries
               associated with the symbol.  The last two fields are the
               symbol's value and its name.
    
               The other common output format, usually seen with ELF based
               files, looks like this:
    
                       00000000 l    d  .bss   00000000 .bss
                       00000000 g       .text  00000000 fred
    
               Here the first number is the symbol's value (sometimes
               referred to as its address).  The next field is actually a set
               of characters and spaces indicating the flag bits that are set
               on the symbol.  These characters are described below.  Next is
               the section with which the symbol is associated or _*ABS*_ if
               the section is absolute (ie not connected with any section),
               or _*UND*_ if the section is referenced in the file being
               dumped, but not defined there.
    
               After the section name comes another field, a number, which
               for common symbols is the alignment and for other symbol is
               the size.  Finally the symbol's name is displayed.
    
               The flag characters are divided into 7 groups as follows:
    
               "l"
               "g"
               "u"
               "!" The symbol is a local (l), global (g), unique global (u),
                   neither global nor local (a space) or both global and
                   local (!).  A symbol can be neither local or global for a
                   variety of reasons, e.g., because it is used for
                   debugging, but it is probably an indication of a bug if it
                   is ever both local and global.  Unique global symbols are
                   a GNU extension to the standard set of ELF symbol
                   bindings.  For such a symbol the dynamic linker will make
                   sure that in the entire process there is just one symbol
                   with this name and type in use.
    
               "w" The symbol is weak (w) or strong (a space).
    
               "C" The symbol denotes a constructor (C) or an ordinary symbol
                   (a space).
    
               "W" The symbol is a warning (W) or a normal symbol (a space).
                   A warning symbol's name is a message to be displayed if
                   the symbol following the warning symbol is ever
                   referenced.
    
               "I"
               "i" The symbol is an indirect reference to another symbol (I),
                   a function to be evaluated during reloc processing (i) or
                   a normal symbol (a space).
    
               "d"
               "D" The symbol is a debugging symbol (d) or a dynamic symbol
                   (D) or a normal symbol (a space).
    
               "F"
               "f"
               "O" The symbol is the name of a function (F) or a file (f) or
                   an object (O) or just a normal symbol (a space).
    
           **-T**
           **--dynamic-syms**
               Print the dynamic symbol table entries of the file.  This is
               only meaningful for dynamic objects, such as certain types of
               shared libraries.  This is similar to the information provided
               by the **nm** program when given the **-D**(**--dynamic**) option.
    
               The output format is similar to that produced by the **--syms**
               option, except that an extra field is inserted before the
               symbol's name, giving the version information associated with
               the symbol.  If the version is the default version to be used
               when resolving unversioned references to the symbol then it's
               displayed as is, otherwise it's put into parentheses.
    
           **--special-syms**
               When displaying symbols include those which the target
               considers to be special in some way and which would not
               normally be of interest to the user.
    
           **-U** _[d|i|l|e|x|h]_
           **--unicode=**_[default|invalid|locale|escape|hex|highlight]_
               Controls the display of UTF-8 encoded multibyte characters in
               strings.  The default (**--unicode=default**) is to give them no
               special treatment.  The **--unicode=locale** option displays the
               sequence in the current locale, which may or may not support
               them.  The options **--unicode=hex** and **--unicode=invalid** display
               them as hex byte sequences enclosed by either angle brackets
               or curly braces.
    
               The **--unicode=escape** option displays them as escape sequences
               (_\uxxxx_) and the **--unicode=highlight** option displays them as
               escape sequences highlighted in red (if supported by the
               output device).  The colouring is intended to draw attention
               to the presence of unicode sequences where they might not be
               expected.
    
           **-V**
           **--version**
               Print the version number of **objdump** and exit.
    
           **-x**
           **--all-headers**
               Display all available header information, including the symbol
               table and relocation entries.  Using **-x** is equivalent to
               specifying all of **-a -f -h -p -r -t**.
    
           **-w**
           **--wide**
               Format some lines for output devices that have more than 80
               columns.  Also do not truncate symbol names when they are
               displayed.
    
           **-z**
           **--disassemble-zeroes**
               Normally the disassembly output will skip blocks of zeroes.
               This option directs the disassembler to disassemble those
               blocks, just like any other data.
    
           **-Z**
           **--decompress**
               The **-Z** option is meant to be used in conunction with the **-s**
               option.  It instructs **objdump** to decompress any compressed
               sections before displaying their contents.
    
           **@**_file_
               Read command-line options from _file_.  The options read are
               inserted in place of the original @_file_ option.  If _file_ does
               not exist, or cannot be read, then the option will be treated
               literally, and not removed.
    
               Options in _file_ are separated by whitespace.  A whitespace
               character may be included in an option by surrounding the
               entire option in either single or double quotes.  Any
               character (including a backslash) may be included by prefixing
               the character to be included with a backslash.  The _file_ may
               itself contain additional @_file_ options; any such options will
               be processed recursively.
    


* * *