1396 lines
49 KiB
Groff
1396 lines
49 KiB
Groff
.\" -*- mode: troff; coding: utf-8 -*-
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.\" ========================================================================
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.\" ========================================================================
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.\"
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.IX Title "OBJDUMP 1"
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.TH OBJDUMP 1 1980-01-01 binutils-2.40.90 "GNU Development Tools"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH NAME
|
|
objdump \- display information from object files
|
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.SH SYNOPSIS
|
|
.IX Header "SYNOPSIS"
|
|
objdump [\fB\-a\fR|\fB\-\-archive\-headers\fR]
|
|
[\fB\-b\fR \fIbfdname\fR|\fB\-\-target=\fR\fIbfdname\fR]
|
|
[\fB\-C\fR|\fB\-\-demangle\fR[=\fIstyle\fR] ]
|
|
[\fB\-d\fR|\fB\-\-disassemble\fR[=\fIsymbol\fR]]
|
|
[\fB\-D\fR|\fB\-\-disassemble\-all\fR]
|
|
[\fB\-z\fR|\fB\-\-disassemble\-zeroes\fR]
|
|
[\fB\-EB\fR|\fB\-EL\fR|\fB\-\-endian=\fR{big | little }]
|
|
[\fB\-f\fR|\fB\-\-file\-headers\fR]
|
|
[\fB\-F\fR|\fB\-\-file\-offsets\fR]
|
|
[\fB\-\-file\-start\-context\fR]
|
|
[\fB\-g\fR|\fB\-\-debugging\fR]
|
|
[\fB\-e\fR|\fB\-\-debugging\-tags\fR]
|
|
[\fB\-h\fR|\fB\-\-section\-headers\fR|\fB\-\-headers\fR]
|
|
[\fB\-i\fR|\fB\-\-info\fR]
|
|
[\fB\-j\fR \fIsection\fR|\fB\-\-section=\fR\fIsection\fR]
|
|
[\fB\-l\fR|\fB\-\-line\-numbers\fR]
|
|
[\fB\-S\fR|\fB\-\-source\fR]
|
|
[\fB\-\-source\-comment\fR[=\fItext\fR]]
|
|
[\fB\-m\fR \fImachine\fR|\fB\-\-architecture=\fR\fImachine\fR]
|
|
[\fB\-M\fR \fIoptions\fR|\fB\-\-disassembler\-options=\fR\fIoptions\fR]
|
|
[\fB\-p\fR|\fB\-\-private\-headers\fR]
|
|
[\fB\-P\fR \fIoptions\fR|\fB\-\-private=\fR\fIoptions\fR]
|
|
[\fB\-r\fR|\fB\-\-reloc\fR]
|
|
[\fB\-R\fR|\fB\-\-dynamic\-reloc\fR]
|
|
[\fB\-s\fR|\fB\-\-full\-contents\fR]
|
|
[\fB\-W[lLiaprmfFsoORtUuTgAck]\fR|
|
|
\fB\-\-dwarf\fR[=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]]
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|
[\fB\-WK\fR|\fB\-\-dwarf=follow\-links\fR]
|
|
[\fB\-WN\fR|\fB\-\-dwarf=no\-follow\-links\fR]
|
|
[\fB\-wD\fR|\fB\-\-dwarf=use\-debuginfod\fR]
|
|
[\fB\-wE\fR|\fB\-\-dwarf=do\-not\-use\-debuginfod\fR]
|
|
[\fB\-L\fR|\fB\-\-process\-links\fR]
|
|
[\fB\-\-ctf=\fR\fIsection\fR]
|
|
[\fB\-\-sframe=\fR\fIsection\fR]
|
|
[\fB\-G\fR|\fB\-\-stabs\fR]
|
|
[\fB\-t\fR|\fB\-\-syms\fR]
|
|
[\fB\-T\fR|\fB\-\-dynamic\-syms\fR]
|
|
[\fB\-x\fR|\fB\-\-all\-headers\fR]
|
|
[\fB\-w\fR|\fB\-\-wide\fR]
|
|
[\fB\-\-start\-address=\fR\fIaddress\fR]
|
|
[\fB\-\-stop\-address=\fR\fIaddress\fR]
|
|
[\fB\-\-no\-addresses\fR]
|
|
[\fB\-\-prefix\-addresses\fR]
|
|
[\fB\-\-[no\-]show\-raw\-insn\fR]
|
|
[\fB\-\-adjust\-vma=\fR\fIoffset\fR]
|
|
[\fB\-\-show\-all\-symbols\fR]
|
|
[\fB\-\-dwarf\-depth=\fR\fIn\fR]
|
|
[\fB\-\-dwarf\-start=\fR\fIn\fR]
|
|
[\fB\-\-ctf\-parent=\fR\fIsection\fR]
|
|
[\fB\-\-no\-recurse\-limit\fR|\fB\-\-recurse\-limit\fR]
|
|
[\fB\-\-special\-syms\fR]
|
|
[\fB\-\-prefix=\fR\fIprefix\fR]
|
|
[\fB\-\-prefix\-strip=\fR\fIlevel\fR]
|
|
[\fB\-\-insn\-width=\fR\fIwidth\fR]
|
|
[\fB\-\-visualize\-jumps[=color|=extended\-color|=off]\fR
|
|
[\fB\-\-disassembler\-color=[off|terminal|on|extended]\fR
|
|
[\fB\-U\fR \fImethod\fR] [\fB\-\-unicode=\fR\fImethod\fR]
|
|
[\fB\-V\fR|\fB\-\-version\fR]
|
|
[\fB\-H\fR|\fB\-\-help\fR]
|
|
\fIobjfile\fR...
|
|
.SH DESCRIPTION
|
|
.IX Header "DESCRIPTION"
|
|
\&\fBobjdump\fR 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.
|
|
.PP
|
|
\&\fIobjfile\fR... are the object files to be examined. When you
|
|
specify archives, \fBobjdump\fR shows information on each of the member
|
|
object files.
|
|
.SH OPTIONS
|
|
.IX Header "OPTIONS"
|
|
The long and short forms of options, shown here as alternatives, are
|
|
equivalent. At least one option from the list
|
|
\&\fB\-a,\-d,\-D,\-e,\-f,\-g,\-G,\-h,\-H,\-p,\-P,\-r,\-R,\-s,\-S,\-t,\-T,\-V,\-x\fR must be given.
|
|
.IP \fB\-a\fR 4
|
|
.IX Item "-a"
|
|
.PD 0
|
|
.IP \fB\-\-archive\-header\fR 4
|
|
.IX Item "--archive-header"
|
|
.PD
|
|
If any of the \fIobjfile\fR files are archives, display the archive
|
|
header information (in a format similar to \fBls \-l\fR). Besides the
|
|
information you could list with \fBar tv\fR, \fBobjdump \-a\fR shows
|
|
the object file format of each archive member.
|
|
.IP \fB\-\-adjust\-vma=\fR\fIoffset\fR 4
|
|
.IX Item "--adjust-vma=offset"
|
|
When dumping information, first add \fIoffset\fR 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.
|
|
.IP "\fB\-b\fR \fIbfdname\fR" 4
|
|
.IX Item "-b bfdname"
|
|
.PD 0
|
|
.IP \fB\-\-target=\fR\fIbfdname\fR 4
|
|
.IX Item "--target=bfdname"
|
|
.PD
|
|
Specify that the object-code format for the object files is
|
|
\&\fIbfdname\fR. This option may not be necessary; \fIobjdump\fR can
|
|
automatically recognize many formats.
|
|
.Sp
|
|
For example,
|
|
.Sp
|
|
.Vb 1
|
|
\& objdump \-b oasys \-m vax \-h fu.o
|
|
.Ve
|
|
.Sp
|
|
displays summary information from the section headers (\fB\-h\fR) of
|
|
\&\fIfu.o\fR, which is explicitly identified (\fB\-m\fR) as a VAX object
|
|
file in the format produced by Oasys compilers. You can list the
|
|
formats available with the \fB\-i\fR option.
|
|
.IP \fB\-C\fR 4
|
|
.IX Item "-C"
|
|
.PD 0
|
|
.IP \fB\-\-demangle[=\fR\fIstyle\fR\fB]\fR 4
|
|
.IX Item "--demangle[=style]"
|
|
.PD
|
|
Decode (\fIdemangle\fR) 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.
|
|
.IP \fB\-\-recurse\-limit\fR 4
|
|
.IX Item "--recurse-limit"
|
|
.PD 0
|
|
.IP \fB\-\-no\-recurse\-limit\fR 4
|
|
.IX Item "--no-recurse-limit"
|
|
.IP \fB\-\-recursion\-limit\fR 4
|
|
.IX Item "--recursion-limit"
|
|
.IP \fB\-\-no\-recursion\-limit\fR 4
|
|
.IX Item "--no-recursion-limit"
|
|
.PD
|
|
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.
|
|
.Sp
|
|
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.
|
|
.IP \fB\-g\fR 4
|
|
.IX Item "-g"
|
|
.PD 0
|
|
.IP \fB\-\-debugging\fR 4
|
|
.IX Item "--debugging"
|
|
.PD
|
|
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 \fB\-W\fR option to print any DWARF information in
|
|
the file.
|
|
.IP \fB\-e\fR 4
|
|
.IX Item "-e"
|
|
.PD 0
|
|
.IP \fB\-\-debugging\-tags\fR 4
|
|
.IX Item "--debugging-tags"
|
|
.PD
|
|
Like \fB\-g\fR, but the information is generated in a format compatible
|
|
with ctags tool.
|
|
.IP \fB\-d\fR 4
|
|
.IX Item "-d"
|
|
.PD 0
|
|
.IP \fB\-\-disassemble\fR 4
|
|
.IX Item "--disassemble"
|
|
.IP \fB\-\-disassemble=\fR\fIsymbol\fR 4
|
|
.IX Item "--disassemble=symbol"
|
|
.PD
|
|
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 \fIsymbol\fR
|
|
argument is given, then display the assembler mnemonics starting at
|
|
\&\fIsymbol\fR. If \fIsymbol\fR 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 \fIsymbol\fR
|
|
then nothing will be displayed.
|
|
.Sp
|
|
Note if the \fB\-\-dwarf=follow\-links\fR option is enabled
|
|
then any symbol tables in linked debug info files will be read in and
|
|
used when disassembling.
|
|
.IP \fB\-D\fR 4
|
|
.IX Item "-D"
|
|
.PD 0
|
|
.IP \fB\-\-disassemble\-all\fR 4
|
|
.IX Item "--disassemble-all"
|
|
.PD
|
|
Like \fB\-d\fR, but disassemble the contents of all non-empty
|
|
non-bss sections, not just those expected to contain instructions.
|
|
\&\fB\-j\fR may be used to select specific sections.
|
|
.Sp
|
|
This option also has a subtle effect on the disassembly of
|
|
instructions in code sections. When option \fB\-d\fR 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 \fB\-D\fR is in effect however
|
|
this assumption is supressed. This means that it is possible for the
|
|
output of \fB\-d\fR and \fB\-D\fR to differ if, for example, data
|
|
is stored in code sections.
|
|
.Sp
|
|
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.
|
|
.Sp
|
|
Note if the \fB\-\-dwarf=follow\-links\fR option is enabled
|
|
then any symbol tables in linked debug info files will be read in and
|
|
used when disassembling.
|
|
.IP \fB\-\-no\-addresses\fR 4
|
|
.IX Item "--no-addresses"
|
|
When disassembling, don't print addresses on each line or for symbols
|
|
and relocation offsets. In combination with \fB\-\-no\-show\-raw\-insn\fR
|
|
this may be useful for comparing compiler output.
|
|
.IP \fB\-\-prefix\-addresses\fR 4
|
|
.IX Item "--prefix-addresses"
|
|
When disassembling, print the complete address on each line. This is
|
|
the older disassembly format.
|
|
.IP \fB\-EB\fR 4
|
|
.IX Item "-EB"
|
|
.PD 0
|
|
.IP \fB\-EL\fR 4
|
|
.IX Item "-EL"
|
|
.IP \fB\-\-endian={big|little}\fR 4
|
|
.IX Item "--endian={big|little}"
|
|
.PD
|
|
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.
|
|
.IP \fB\-f\fR 4
|
|
.IX Item "-f"
|
|
.PD 0
|
|
.IP \fB\-\-file\-headers\fR 4
|
|
.IX Item "--file-headers"
|
|
.PD
|
|
Display summary information from the overall header of
|
|
each of the \fIobjfile\fR files.
|
|
.IP \fB\-F\fR 4
|
|
.IX Item "-F"
|
|
.PD 0
|
|
.IP \fB\-\-file\-offsets\fR 4
|
|
.IX Item "--file-offsets"
|
|
.PD
|
|
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.
|
|
.IP \fB\-\-file\-start\-context\fR 4
|
|
.IX Item "--file-start-context"
|
|
Specify that when displaying interlisted source code/disassembly
|
|
(assumes \fB\-S\fR) from a file that has not yet been displayed, extend the
|
|
context to the start of the file.
|
|
.IP \fB\-h\fR 4
|
|
.IX Item "-h"
|
|
.PD 0
|
|
.IP \fB\-\-section\-headers\fR 4
|
|
.IX Item "--section-headers"
|
|
.IP \fB\-\-headers\fR 4
|
|
.IX Item "--headers"
|
|
.PD
|
|
Display summary information from the section headers of the
|
|
object file.
|
|
.Sp
|
|
File segments may be relocated to nonstandard addresses, for example by
|
|
using the \fB\-Ttext\fR, \fB\-Tdata\fR, or \fB\-Tbss\fR options to
|
|
\&\fBld\fR. However, some object file formats, such as a.out, do not
|
|
store the starting address of the file segments. In those situations,
|
|
although \fBld\fR relocates the sections correctly, using \fBobjdump
|
|
\&\-h\fR to list the file section headers cannot show the correct addresses.
|
|
Instead, it shows the usual addresses, which are implicit for the
|
|
target.
|
|
.Sp
|
|
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 \fBobjdump\fR will report both
|
|
since the exact setting of the flag bits might be important.
|
|
.IP \fB\-H\fR 4
|
|
.IX Item "-H"
|
|
.PD 0
|
|
.IP \fB\-\-help\fR 4
|
|
.IX Item "--help"
|
|
.PD
|
|
Print a summary of the options to \fBobjdump\fR and exit.
|
|
.IP \fB\-i\fR 4
|
|
.IX Item "-i"
|
|
.PD 0
|
|
.IP \fB\-\-info\fR 4
|
|
.IX Item "--info"
|
|
.PD
|
|
Display a list showing all architectures and object formats available
|
|
for specification with \fB\-b\fR or \fB\-m\fR.
|
|
.IP "\fB\-j\fR \fIname\fR" 4
|
|
.IX Item "-j name"
|
|
.PD 0
|
|
.IP \fB\-\-section=\fR\fIname\fR 4
|
|
.IX Item "--section=name"
|
|
.PD
|
|
Display information for section \fIname\fR. This option may be
|
|
specified multiple times.
|
|
.IP \fB\-L\fR 4
|
|
.IX Item "-L"
|
|
.PD 0
|
|
.IP \fB\-\-process\-links\fR 4
|
|
.IX Item "--process-links"
|
|
.PD
|
|
Display the contents of non-debug sections found in separate debuginfo
|
|
files that are linked to the main file. This option automatically
|
|
implies the \fB\-WK\fR option, and only sections requested by other
|
|
command line options will be displayed.
|
|
.IP \fB\-l\fR 4
|
|
.IX Item "-l"
|
|
.PD 0
|
|
.IP \fB\-\-line\-numbers\fR 4
|
|
.IX Item "--line-numbers"
|
|
.PD
|
|
Label the display (using debugging information) with the filename and
|
|
source line numbers corresponding to the object code or relocs shown.
|
|
Only useful with \fB\-d\fR, \fB\-D\fR, or \fB\-r\fR.
|
|
.IP "\fB\-m\fR \fImachine\fR" 4
|
|
.IX Item "-m machine"
|
|
.PD 0
|
|
.IP \fB\-\-architecture=\fR\fImachine\fR 4
|
|
.IX Item "--architecture=machine"
|
|
.PD
|
|
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 \fB\-i\fR option.
|
|
.Sp
|
|
For most architectures it is possible to supply an architecture
|
|
name and a machine name, separated by a colon. For example
|
|
\&\fBfoo:bar\fR would refer to the \fBbar\fR machine type in the
|
|
\&\fBfoo\fR architecture. This can be helpful if objdump has been
|
|
configured to support multiple architectures.
|
|
.Sp
|
|
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 \fImachine\fR.
|
|
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 \fB\-marm\fR.
|
|
.IP "\fB\-M\fR \fIoptions\fR" 4
|
|
.IX Item "-M options"
|
|
.PD 0
|
|
.IP \fB\-\-disassembler\-options=\fR\fIoptions\fR 4
|
|
.IX Item "--disassembler-options=options"
|
|
.PD
|
|
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 \fB\-M\fR options can be used or
|
|
can be placed together into a comma separated list.
|
|
.Sp
|
|
For ARC, \fBdsp\fR controls the printing of DSP instructions,
|
|
\&\fBspfp\fR selects the printing of FPX single precision FP
|
|
instructions, \fBdpfp\fR selects the printing of FPX double
|
|
precision FP instructions, \fBquarkse_em\fR selects the printing of
|
|
special QuarkSE-EM instructions, \fBfpuda\fR selects the printing
|
|
of double precision assist instructions, \fBfpus\fR selects the
|
|
printing of FPU single precision FP instructions, while \fBfpud\fR
|
|
selects the printing of FPU double precision FP instructions.
|
|
Additionally, one can choose to have all the immediates printed in
|
|
hexadecimal using \fBhex\fR. By default, the short immediates are
|
|
printed using the decimal representation, while the long immediate
|
|
values are printed as hexadecimal.
|
|
.Sp
|
|
\&\fBcpu=...\fR allows one to enforce a particular ISA when disassembling
|
|
instructions, overriding the \fB\-m\fR 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
|
|
\&\fB\-mcpu=...\fR option.
|
|
.Sp
|
|
If the target is an ARM architecture then this switch can be used to
|
|
select which register name set is used during disassembler. Specifying
|
|
\&\fB\-M reg-names-std\fR (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
|
|
\&\fB\-M reg-names-apcs\fR will select the name set used by the ARM
|
|
Procedure Call Standard, whilst specifying \fB\-M reg-names-raw\fR will
|
|
just use \fBr\fR followed by the register number.
|
|
.Sp
|
|
There are also two variants on the APCS register naming scheme enabled
|
|
by \fB\-M reg-names-atpcs\fR and \fB\-M reg-names-special-atpcs\fR which
|
|
use the ARM/Thumb Procedure Call Standard naming conventions. (Either
|
|
with the normal register names or the special register names).
|
|
.Sp
|
|
This option can also be used for ARM architectures to force the
|
|
disassembler to interpret all instructions as Thumb instructions by
|
|
using the switch \fB\-\-disassembler\-options=force\-thumb\fR. This can be
|
|
useful when attempting to disassemble thumb code produced by other
|
|
compilers.
|
|
.Sp
|
|
For AArch64 targets this switch can be used to set whether instructions are
|
|
disassembled as the most general instruction using the \fB\-M no-aliases\fR
|
|
option or whether instruction notes should be generated as comments in the
|
|
disasssembly using \fB\-M notes\fR.
|
|
.Sp
|
|
For the x86, some of the options duplicate functions of the \fB\-m\fR
|
|
switch, but allow finer grained control.
|
|
.RS 4
|
|
.ie n .IP """x86\-64""" 4
|
|
.el .IP \f(CWx86\-64\fR 4
|
|
.IX Item "x86-64"
|
|
.PD 0
|
|
.ie n .IP """i386""" 4
|
|
.el .IP \f(CWi386\fR 4
|
|
.IX Item "i386"
|
|
.ie n .IP """i8086""" 4
|
|
.el .IP \f(CWi8086\fR 4
|
|
.IX Item "i8086"
|
|
.PD
|
|
Select disassembly for the given architecture.
|
|
.ie n .IP """intel""" 4
|
|
.el .IP \f(CWintel\fR 4
|
|
.IX Item "intel"
|
|
.PD 0
|
|
.ie n .IP """att""" 4
|
|
.el .IP \f(CWatt\fR 4
|
|
.IX Item "att"
|
|
.PD
|
|
Select between intel syntax mode and AT&T syntax mode.
|
|
.ie n .IP """amd64""" 4
|
|
.el .IP \f(CWamd64\fR 4
|
|
.IX Item "amd64"
|
|
.PD 0
|
|
.ie n .IP """intel64""" 4
|
|
.el .IP \f(CWintel64\fR 4
|
|
.IX Item "intel64"
|
|
.PD
|
|
Select between AMD64 ISA and Intel64 ISA.
|
|
.ie n .IP """intel\-mnemonic""" 4
|
|
.el .IP \f(CWintel\-mnemonic\fR 4
|
|
.IX Item "intel-mnemonic"
|
|
.PD 0
|
|
.ie n .IP """att\-mnemonic""" 4
|
|
.el .IP \f(CWatt\-mnemonic\fR 4
|
|
.IX Item "att-mnemonic"
|
|
.PD
|
|
Select between intel mnemonic mode and AT&T mnemonic mode.
|
|
Note: \f(CW\*(C`intel\-mnemonic\*(C'\fR implies \f(CW\*(C`intel\*(C'\fR and
|
|
\&\f(CW\*(C`att\-mnemonic\*(C'\fR implies \f(CW\*(C`att\*(C'\fR.
|
|
.ie n .IP """addr64""" 4
|
|
.el .IP \f(CWaddr64\fR 4
|
|
.IX Item "addr64"
|
|
.PD 0
|
|
.ie n .IP """addr32""" 4
|
|
.el .IP \f(CWaddr32\fR 4
|
|
.IX Item "addr32"
|
|
.ie n .IP """addr16""" 4
|
|
.el .IP \f(CWaddr16\fR 4
|
|
.IX Item "addr16"
|
|
.ie n .IP """data32""" 4
|
|
.el .IP \f(CWdata32\fR 4
|
|
.IX Item "data32"
|
|
.ie n .IP """data16""" 4
|
|
.el .IP \f(CWdata16\fR 4
|
|
.IX Item "data16"
|
|
.PD
|
|
Specify the default address size and operand size. These five options
|
|
will be overridden if \f(CW\*(C`x86\-64\*(C'\fR, \f(CW\*(C`i386\*(C'\fR or \f(CW\*(C`i8086\*(C'\fR
|
|
appear later in the option string.
|
|
.ie n .IP """suffix""" 4
|
|
.el .IP \f(CWsuffix\fR 4
|
|
.IX Item "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.
|
|
.RE
|
|
.RS 4
|
|
.Sp
|
|
For PowerPC, the \fB\-M\fR argument \fBraw\fR selects
|
|
disasssembly of hardware insns rather than aliases. For example, you
|
|
will see \f(CW\*(C`rlwinm\*(C'\fR rather than \f(CW\*(C`clrlwi\*(C'\fR, and \f(CW\*(C`addi\*(C'\fR
|
|
rather than \f(CW\*(C`li\*(C'\fR. All of the \fB\-m\fR arguments for
|
|
\&\fBgas\fR that select a CPU are supported. These are:
|
|
\&\fB403\fR, \fB405\fR, \fB440\fR, \fB464\fR, \fB476\fR,
|
|
\&\fB601\fR, \fB603\fR, \fB604\fR, \fB620\fR, \fB7400\fR,
|
|
\&\fB7410\fR, \fB7450\fR, \fB7455\fR, \fB750cl\fR,
|
|
\&\fB821\fR, \fB850\fR, \fB860\fR, \fBa2\fR, \fBbooke\fR,
|
|
\&\fBbooke32\fR, \fBcell\fR, \fBcom\fR, \fBe200z2\fR, \fBe200z4\fR,
|
|
\&\fBe300\fR, \fBe500\fR, \fBe500mc\fR, \fBe500mc64\fR,
|
|
\&\fBe500x2\fR, \fBe5500\fR, \fBe6500\fR, \fBefs\fR,
|
|
\&\fBpower4\fR, \fBpower5\fR, \fBpower6\fR, \fBpower7\fR,
|
|
\&\fBpower8\fR, \fBpower9\fR, \fBpower10\fR, \fBppc\fR,
|
|
\&\fBppc32\fR, \fBppc64\fR, \fBppc64bridge\fR, \fBppcps\fR,
|
|
\&\fBpwr\fR, \fBpwr2\fR, \fBpwr4\fR, \fBpwr5\fR, \fBpwr5x\fR,
|
|
\&\fBpwr6\fR, \fBpwr7\fR, \fBpwr8\fR, \fBpwr9\fR, \fBpwr10\fR,
|
|
\&\fBpwrx\fR, \fBtitan\fR, \fBvle\fR, and \fBfuture\fR.
|
|
\&\fB32\fR and \fB64\fR modify the default or a prior CPU
|
|
selection, disabling and enabling 64\-bit insns respectively. In
|
|
addition, \fBaltivec\fR, \fBany\fR, \fBlsp\fR, \fBhtm\fR,
|
|
\&\fBvsx\fR, \fBspe\fR and \fBspe2\fR add capabilities to a
|
|
previous \fIor later\fR CPU selection.
|
|
\&\fBany\fR 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.
|
|
.Sp
|
|
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:
|
|
.ie n .IP """no\-aliases""" 4
|
|
.el .IP \f(CWno\-aliases\fR 4
|
|
.IX Item "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.
|
|
.ie n .IP """msa""" 4
|
|
.el .IP \f(CWmsa\fR 4
|
|
.IX Item "msa"
|
|
Disassemble MSA instructions.
|
|
.ie n .IP """virt""" 4
|
|
.el .IP \f(CWvirt\fR 4
|
|
.IX Item "virt"
|
|
Disassemble the virtualization ASE instructions.
|
|
.ie n .IP """xpa""" 4
|
|
.el .IP \f(CWxpa\fR 4
|
|
.IX Item "xpa"
|
|
Disassemble the eXtended Physical Address (XPA) ASE instructions.
|
|
.ie n .IP """gpr\-names=\fIABI\fR""" 4
|
|
.el .IP \f(CWgpr\-names=\fR\f(CIABI\fR\f(CW\fR 4
|
|
.IX Item "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.
|
|
.ie n .IP """fpr\-names=\fIABI\fR""" 4
|
|
.el .IP \f(CWfpr\-names=\fR\f(CIABI\fR\f(CW\fR 4
|
|
.IX Item "fpr-names=ABI"
|
|
Print FPR (floating-point register) names as
|
|
appropriate for the specified ABI. By default, FPR numbers are printed
|
|
rather than names.
|
|
.ie n .IP """cp0\-names=\fIARCH\fR""" 4
|
|
.el .IP \f(CWcp0\-names=\fR\f(CIARCH\fR\f(CW\fR 4
|
|
.IX Item "cp0-names=ARCH"
|
|
Print CP0 (system control coprocessor; coprocessor 0) register names
|
|
as appropriate for the CPU or architecture specified by
|
|
\&\fIARCH\fR. By default, CP0 register names are selected according to
|
|
the architecture and CPU of the binary being disassembled.
|
|
.ie n .IP """hwr\-names=\fIARCH\fR""" 4
|
|
.el .IP \f(CWhwr\-names=\fR\f(CIARCH\fR\f(CW\fR 4
|
|
.IX Item "hwr-names=ARCH"
|
|
Print HWR (hardware register, used by the \f(CW\*(C`rdhwr\*(C'\fR instruction) names
|
|
as appropriate for the CPU or architecture specified by
|
|
\&\fIARCH\fR. By default, HWR names are selected according to
|
|
the architecture and CPU of the binary being disassembled.
|
|
.ie n .IP """reg\-names=\fIABI\fR""" 4
|
|
.el .IP \f(CWreg\-names=\fR\f(CIABI\fR\f(CW\fR 4
|
|
.IX Item "reg-names=ABI"
|
|
Print GPR and FPR names as appropriate for the selected ABI.
|
|
.ie n .IP """reg\-names=\fIARCH\fR""" 4
|
|
.el .IP \f(CWreg\-names=\fR\f(CIARCH\fR\f(CW\fR 4
|
|
.IX Item "reg-names=ARCH"
|
|
Print CPU-specific register names (CP0 register and HWR names)
|
|
as appropriate for the selected CPU or architecture.
|
|
.RE
|
|
.RS 4
|
|
.Sp
|
|
For any of the options listed above, \fIABI\fR or
|
|
\&\fIARCH\fR may be specified as \fBnumeric\fR to have numbers printed
|
|
rather than names, for the selected types of registers.
|
|
You can list the available values of \fIABI\fR and \fIARCH\fR using
|
|
the \fB\-\-help\fR option.
|
|
.Sp
|
|
For VAX, you can specify function entry addresses with \fB\-M
|
|
entry:0xf00ba\fR. 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.
|
|
.RE
|
|
.IP \fB\-p\fR 4
|
|
.IX Item "-p"
|
|
.PD 0
|
|
.IP \fB\-\-private\-headers\fR 4
|
|
.IX Item "--private-headers"
|
|
.PD
|
|
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.
|
|
.IP "\fB\-P\fR \fIoptions\fR" 4
|
|
.IX Item "-P options"
|
|
.PD 0
|
|
.IP \fB\-\-private=\fR\fIoptions\fR 4
|
|
.IX Item "--private=options"
|
|
.PD
|
|
Print information that is specific to the object file format. The
|
|
argument \fIoptions\fR is a comma separated list that depends on the
|
|
format (the lists of options is displayed with the help).
|
|
.Sp
|
|
For XCOFF, the available options are:
|
|
.RS 4
|
|
.ie n .IP """header""" 4
|
|
.el .IP \f(CWheader\fR 4
|
|
.IX Item "header"
|
|
.PD 0
|
|
.ie n .IP """aout""" 4
|
|
.el .IP \f(CWaout\fR 4
|
|
.IX Item "aout"
|
|
.ie n .IP """sections""" 4
|
|
.el .IP \f(CWsections\fR 4
|
|
.IX Item "sections"
|
|
.ie n .IP """syms""" 4
|
|
.el .IP \f(CWsyms\fR 4
|
|
.IX Item "syms"
|
|
.ie n .IP """relocs""" 4
|
|
.el .IP \f(CWrelocs\fR 4
|
|
.IX Item "relocs"
|
|
.ie n .IP """lineno,""" 4
|
|
.el .IP \f(CWlineno,\fR 4
|
|
.IX Item "lineno,"
|
|
.ie n .IP """loader""" 4
|
|
.el .IP \f(CWloader\fR 4
|
|
.IX Item "loader"
|
|
.ie n .IP """except""" 4
|
|
.el .IP \f(CWexcept\fR 4
|
|
.IX Item "except"
|
|
.ie n .IP """typchk""" 4
|
|
.el .IP \f(CWtypchk\fR 4
|
|
.IX Item "typchk"
|
|
.ie n .IP """traceback""" 4
|
|
.el .IP \f(CWtraceback\fR 4
|
|
.IX Item "traceback"
|
|
.ie n .IP """toc""" 4
|
|
.el .IP \f(CWtoc\fR 4
|
|
.IX Item "toc"
|
|
.ie n .IP """ldinfo""" 4
|
|
.el .IP \f(CWldinfo\fR 4
|
|
.IX Item "ldinfo"
|
|
.RE
|
|
.RS 4
|
|
.PD
|
|
.Sp
|
|
For PE, the available options are:
|
|
.ie n .IP """header""" 4
|
|
.el .IP \f(CWheader\fR 4
|
|
.IX Item "header"
|
|
.PD 0
|
|
.ie n .IP """sections""" 4
|
|
.el .IP \f(CWsections\fR 4
|
|
.IX Item "sections"
|
|
.RE
|
|
.RS 4
|
|
.PD
|
|
.Sp
|
|
Not all object formats support this option. In particular the ELF
|
|
format does not use it.
|
|
.RE
|
|
.IP \fB\-r\fR 4
|
|
.IX Item "-r"
|
|
.PD 0
|
|
.IP \fB\-\-reloc\fR 4
|
|
.IX Item "--reloc"
|
|
.PD
|
|
Print the relocation entries of the file. If used with \fB\-d\fR or
|
|
\&\fB\-D\fR, the relocations are printed interspersed with the
|
|
disassembly.
|
|
.IP \fB\-R\fR 4
|
|
.IX Item "-R"
|
|
.PD 0
|
|
.IP \fB\-\-dynamic\-reloc\fR 4
|
|
.IX Item "--dynamic-reloc"
|
|
.PD
|
|
Print the dynamic relocation entries of the file. This is only
|
|
meaningful for dynamic objects, such as certain types of shared
|
|
libraries. As for \fB\-r\fR, if used with \fB\-d\fR or
|
|
\&\fB\-D\fR, the relocations are printed interspersed with the
|
|
disassembly.
|
|
.IP \fB\-s\fR 4
|
|
.IX Item "-s"
|
|
.PD 0
|
|
.IP \fB\-\-full\-contents\fR 4
|
|
.IX Item "--full-contents"
|
|
.PD
|
|
Display the full contents of sections, often used in combination with
|
|
\&\fB\-j\fR to request specific sections. By default all non-empty
|
|
non-bss sections are displayed.
|
|
.IP \fB\-S\fR 4
|
|
.IX Item "-S"
|
|
.PD 0
|
|
.IP \fB\-\-source\fR 4
|
|
.IX Item "--source"
|
|
.PD
|
|
Display source code intermixed with disassembly, if possible. Implies
|
|
\&\fB\-d\fR.
|
|
.IP \fB\-\-show\-all\-symbols\fR 4
|
|
.IX Item "--show-all-symbols"
|
|
When disassembling, show all the symbols that match a given address,
|
|
not just the first one.
|
|
.IP \fB\-\-source\-comment[=\fR\fItxt\fR\fB]\fR 4
|
|
.IX Item "--source-comment[=txt]"
|
|
Like the \fB\-S\fR option, but all source code lines are displayed
|
|
with a prefix of \fItxt\fR. Typically \fItxt\fR will be a comment
|
|
string which can be used to distinguish the assembler code from the
|
|
source code. If \fItxt\fR is not provided then a default string of
|
|
\&\fI"# "\fR (hash followed by a space), will be used.
|
|
.IP \fB\-\-prefix=\fR\fIprefix\fR 4
|
|
.IX Item "--prefix=prefix"
|
|
Specify \fIprefix\fR to add to the absolute paths when used with
|
|
\&\fB\-S\fR.
|
|
.IP \fB\-\-prefix\-strip=\fR\fIlevel\fR 4
|
|
.IX Item "--prefix-strip=level"
|
|
Indicate how many initial directory names to strip off the hardwired
|
|
absolute paths. It has no effect without \fB\-\-prefix=\fR\fIprefix\fR.
|
|
.IP \fB\-\-show\-raw\-insn\fR 4
|
|
.IX Item "--show-raw-insn"
|
|
When disassembling instructions, print the instruction in hex as well as
|
|
in symbolic form. This is the default except when
|
|
\&\fB\-\-prefix\-addresses\fR is used.
|
|
.IP \fB\-\-no\-show\-raw\-insn\fR 4
|
|
.IX Item "--no-show-raw-insn"
|
|
When disassembling instructions, do not print the instruction bytes.
|
|
This is the default when \fB\-\-prefix\-addresses\fR is used.
|
|
.IP \fB\-\-insn\-width=\fR\fIwidth\fR 4
|
|
.IX Item "--insn-width=width"
|
|
Display \fIwidth\fR bytes on a single line when disassembling
|
|
instructions.
|
|
.IP \fB\-\-visualize\-jumps[=color|=extended\-color|=off]\fR 4
|
|
.IX Item "--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 \fB=color\fR argument
|
|
adds color to the output using simple terminal colors. Alternatively
|
|
the \fB=extended\-color\fR argument will add color using 8bit
|
|
colors, but these might not work on all terminals.
|
|
.Sp
|
|
If it is necessary to disable the \fBvisualize-jumps\fR option
|
|
after it has previously been enabled then use
|
|
\&\fBvisualize\-jumps=off\fR.
|
|
.IP \fB\-\-disassembler\-color=off\fR 4
|
|
.IX Item "--disassembler-color=off"
|
|
.PD 0
|
|
.IP \fB\-\-disassembler\-color=terminal\fR 4
|
|
.IX Item "--disassembler-color=terminal"
|
|
.IP \fB\-\-disassembler\-color=on|color|colour\fR 4
|
|
.IX Item "--disassembler-color=on|color|colour"
|
|
.IP \fB\-\-disassembler\-color=extened|extended\-color|extened\-colour\fR 4
|
|
.IX Item "--disassembler-color=extened|extended-color|extened-colour"
|
|
.PD
|
|
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.
|
|
.Sp
|
|
The \fBon\fR argument adds colors using simple terminal colors.
|
|
.Sp
|
|
The \fBterminal\fR argument does the same, but only if the output
|
|
device is a terminal.
|
|
.Sp
|
|
The \fBextended-color\fR argument is similar to the \fBon\fR
|
|
argument, but it uses 8\-bit colors. These may not work on all
|
|
terminals.
|
|
.Sp
|
|
The \fBoff\fR argument disables colored disassembly.
|
|
.IP \fB\-W[lLiaprmfFsoORtUuTgAckK]\fR 4
|
|
.IX Item "-W[lLiaprmfFsoORtUuTgAckK]"
|
|
.PD 0
|
|
.IP \fB\-\-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]\fR 4
|
|
.IX Item "--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]"
|
|
.PD
|
|
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:
|
|
.RS 4
|
|
.ie n .IP """a""" 4
|
|
.el .IP \f(CWa\fR 4
|
|
.IX Item "a"
|
|
.PD 0
|
|
.ie n .IP """=abbrev""" 4
|
|
.el .IP \f(CW=abbrev\fR 4
|
|
.IX Item "=abbrev"
|
|
.PD
|
|
Displays the contents of the \fB.debug_abbrev\fR section.
|
|
.ie n .IP """A""" 4
|
|
.el .IP \f(CWA\fR 4
|
|
.IX Item "A"
|
|
.PD 0
|
|
.ie n .IP """=addr""" 4
|
|
.el .IP \f(CW=addr\fR 4
|
|
.IX Item "=addr"
|
|
.PD
|
|
Displays the contents of the \fB.debug_addr\fR section.
|
|
.ie n .IP """c""" 4
|
|
.el .IP \f(CWc\fR 4
|
|
.IX Item "c"
|
|
.PD 0
|
|
.ie n .IP """=cu_index""" 4
|
|
.el .IP \f(CW=cu_index\fR 4
|
|
.IX Item "=cu_index"
|
|
.PD
|
|
Displays the contents of the \fB.debug_cu_index\fR and/or
|
|
\&\fB.debug_tu_index\fR sections.
|
|
.ie n .IP """f""" 4
|
|
.el .IP \f(CWf\fR 4
|
|
.IX Item "f"
|
|
.PD 0
|
|
.ie n .IP """=frames""" 4
|
|
.el .IP \f(CW=frames\fR 4
|
|
.IX Item "=frames"
|
|
.PD
|
|
Display the raw contents of a \fB.debug_frame\fR section.
|
|
.ie n .IP """F""" 4
|
|
.el .IP \f(CWF\fR 4
|
|
.IX Item "F"
|
|
.PD 0
|
|
.ie n .IP """=frames\-interp""" 4
|
|
.el .IP \f(CW=frames\-interp\fR 4
|
|
.IX Item "=frames-interp"
|
|
.PD
|
|
Display the interpreted contents of a \fB.debug_frame\fR section.
|
|
.ie n .IP """g""" 4
|
|
.el .IP \f(CWg\fR 4
|
|
.IX Item "g"
|
|
.PD 0
|
|
.ie n .IP """=gdb_index""" 4
|
|
.el .IP \f(CW=gdb_index\fR 4
|
|
.IX Item "=gdb_index"
|
|
.PD
|
|
Displays the contents of the \fB.gdb_index\fR and/or
|
|
\&\fB.debug_names\fR sections.
|
|
.ie n .IP """i""" 4
|
|
.el .IP \f(CWi\fR 4
|
|
.IX Item "i"
|
|
.PD 0
|
|
.ie n .IP """=info""" 4
|
|
.el .IP \f(CW=info\fR 4
|
|
.IX Item "=info"
|
|
.PD
|
|
Displays the contents of the \fB.debug_info\fR section. Note: the
|
|
output from this option can also be restricted by the use of the
|
|
\&\fB\-\-dwarf\-depth\fR and \fB\-\-dwarf\-start\fR options.
|
|
.ie n .IP """k""" 4
|
|
.el .IP \f(CWk\fR 4
|
|
.IX Item "k"
|
|
.PD 0
|
|
.ie n .IP """=links""" 4
|
|
.el .IP \f(CW=links\fR 4
|
|
.IX Item "=links"
|
|
.PD
|
|
Displays the contents of the \fB.gnu_debuglink\fR,
|
|
\&\fB.gnu_debugaltlink\fR and \fB.debug_sup\fR 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 \fB.debug_info\fR section.
|
|
.ie n .IP """K""" 4
|
|
.el .IP \f(CWK\fR 4
|
|
.IX Item "K"
|
|
.PD 0
|
|
.ie n .IP """=follow\-links""" 4
|
|
.el .IP \f(CW=follow\-links\fR 4
|
|
.IX Item "=follow-links"
|
|
.PD
|
|
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.
|
|
.Sp
|
|
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.
|
|
.Sp
|
|
Note \- in some distributions this option is enabled by default. It
|
|
can be disabled via the \fBN\fR debug option. The default can be
|
|
chosen when configuring the binutils via the
|
|
\&\fB\-\-enable\-follow\-debug\-links=yes\fR or
|
|
\&\fB\-\-enable\-follow\-debug\-links=no\fR options. If these are not
|
|
used then the default is to enable the following of debug links.
|
|
.Sp
|
|
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 \fIDEBUGINFOD_URLS\fR
|
|
environment variable. This could take some time to resolve. This
|
|
behaviour can be disabled via the \fB=do\-not\-use\-debuginfod\fR debug
|
|
option.
|
|
.ie n .IP """N""" 4
|
|
.el .IP \f(CWN\fR 4
|
|
.IX Item "N"
|
|
.PD 0
|
|
.ie n .IP """=no\-follow\-links""" 4
|
|
.el .IP \f(CW=no\-follow\-links\fR 4
|
|
.IX Item "=no-follow-links"
|
|
.PD
|
|
Disables the following of links to separate debug info files.
|
|
.ie n .IP """D""" 4
|
|
.el .IP \f(CWD\fR 4
|
|
.IX Item "D"
|
|
.PD 0
|
|
.ie n .IP """=use\-debuginfod""" 4
|
|
.el .IP \f(CW=use\-debuginfod\fR 4
|
|
.IX Item "=use-debuginfod"
|
|
.PD
|
|
Enables contacting debuginfod servers if there is a need to follow
|
|
debug links. This is the default behaviour.
|
|
.ie n .IP """E""" 4
|
|
.el .IP \f(CWE\fR 4
|
|
.IX Item "E"
|
|
.PD 0
|
|
.ie n .IP """=do\-not\-use\-debuginfod""" 4
|
|
.el .IP \f(CW=do\-not\-use\-debuginfod\fR 4
|
|
.IX Item "=do-not-use-debuginfod"
|
|
.PD
|
|
Disables contacting debuginfod servers when there is a need to follow
|
|
debug links.
|
|
.ie n .IP """l""" 4
|
|
.el .IP \f(CWl\fR 4
|
|
.IX Item "l"
|
|
.PD 0
|
|
.ie n .IP """=rawline""" 4
|
|
.el .IP \f(CW=rawline\fR 4
|
|
.IX Item "=rawline"
|
|
.PD
|
|
Displays the contents of the \fB.debug_line\fR section in a raw
|
|
format.
|
|
.ie n .IP """L""" 4
|
|
.el .IP \f(CWL\fR 4
|
|
.IX Item "L"
|
|
.PD 0
|
|
.ie n .IP """=decodedline""" 4
|
|
.el .IP \f(CW=decodedline\fR 4
|
|
.IX Item "=decodedline"
|
|
.PD
|
|
Displays the interpreted contents of the \fB.debug_line\fR section.
|
|
.ie n .IP """m""" 4
|
|
.el .IP \f(CWm\fR 4
|
|
.IX Item "m"
|
|
.PD 0
|
|
.ie n .IP """=macro""" 4
|
|
.el .IP \f(CW=macro\fR 4
|
|
.IX Item "=macro"
|
|
.PD
|
|
Displays the contents of the \fB.debug_macro\fR and/or
|
|
\&\fB.debug_macinfo\fR sections.
|
|
.ie n .IP """o""" 4
|
|
.el .IP \f(CWo\fR 4
|
|
.IX Item "o"
|
|
.PD 0
|
|
.ie n .IP """=loc""" 4
|
|
.el .IP \f(CW=loc\fR 4
|
|
.IX Item "=loc"
|
|
.PD
|
|
Displays the contents of the \fB.debug_loc\fR and/or
|
|
\&\fB.debug_loclists\fR sections.
|
|
.ie n .IP """O""" 4
|
|
.el .IP \f(CWO\fR 4
|
|
.IX Item "O"
|
|
.PD 0
|
|
.ie n .IP """=str\-offsets""" 4
|
|
.el .IP \f(CW=str\-offsets\fR 4
|
|
.IX Item "=str-offsets"
|
|
.PD
|
|
Displays the contents of the \fB.debug_str_offsets\fR section.
|
|
.ie n .IP """p""" 4
|
|
.el .IP \f(CWp\fR 4
|
|
.IX Item "p"
|
|
.PD 0
|
|
.ie n .IP """=pubnames""" 4
|
|
.el .IP \f(CW=pubnames\fR 4
|
|
.IX Item "=pubnames"
|
|
.PD
|
|
Displays the contents of the \fB.debug_pubnames\fR and/or
|
|
\&\fB.debug_gnu_pubnames\fR sections.
|
|
.ie n .IP """r""" 4
|
|
.el .IP \f(CWr\fR 4
|
|
.IX Item "r"
|
|
.PD 0
|
|
.ie n .IP """=aranges""" 4
|
|
.el .IP \f(CW=aranges\fR 4
|
|
.IX Item "=aranges"
|
|
.PD
|
|
Displays the contents of the \fB.debug_aranges\fR section.
|
|
.ie n .IP """R""" 4
|
|
.el .IP \f(CWR\fR 4
|
|
.IX Item "R"
|
|
.PD 0
|
|
.ie n .IP """=Ranges""" 4
|
|
.el .IP \f(CW=Ranges\fR 4
|
|
.IX Item "=Ranges"
|
|
.PD
|
|
Displays the contents of the \fB.debug_ranges\fR and/or
|
|
\&\fB.debug_rnglists\fR sections.
|
|
.ie n .IP """s""" 4
|
|
.el .IP \f(CWs\fR 4
|
|
.IX Item "s"
|
|
.PD 0
|
|
.ie n .IP """=str""" 4
|
|
.el .IP \f(CW=str\fR 4
|
|
.IX Item "=str"
|
|
.PD
|
|
Displays the contents of the \fB.debug_str\fR, \fB.debug_line_str\fR
|
|
and/or \fB.debug_str_offsets\fR sections.
|
|
.ie n .IP """t""" 4
|
|
.el .IP \f(CWt\fR 4
|
|
.IX Item "t"
|
|
.PD 0
|
|
.ie n .IP """=pubtype""" 4
|
|
.el .IP \f(CW=pubtype\fR 4
|
|
.IX Item "=pubtype"
|
|
.PD
|
|
Displays the contents of the \fB.debug_pubtypes\fR and/or
|
|
\&\fB.debug_gnu_pubtypes\fR sections.
|
|
.ie n .IP """T""" 4
|
|
.el .IP \f(CWT\fR 4
|
|
.IX Item "T"
|
|
.PD 0
|
|
.ie n .IP """=trace_aranges""" 4
|
|
.el .IP \f(CW=trace_aranges\fR 4
|
|
.IX Item "=trace_aranges"
|
|
.PD
|
|
Displays the contents of the \fB.trace_aranges\fR section.
|
|
.ie n .IP """u""" 4
|
|
.el .IP \f(CWu\fR 4
|
|
.IX Item "u"
|
|
.PD 0
|
|
.ie n .IP """=trace_abbrev""" 4
|
|
.el .IP \f(CW=trace_abbrev\fR 4
|
|
.IX Item "=trace_abbrev"
|
|
.PD
|
|
Displays the contents of the \fB.trace_abbrev\fR section.
|
|
.ie n .IP """U""" 4
|
|
.el .IP \f(CWU\fR 4
|
|
.IX Item "U"
|
|
.PD 0
|
|
.ie n .IP """=trace_info""" 4
|
|
.el .IP \f(CW=trace_info\fR 4
|
|
.IX Item "=trace_info"
|
|
.PD
|
|
Displays the contents of the \fB.trace_info\fR section.
|
|
.RE
|
|
.RS 4
|
|
.Sp
|
|
Note: displaying the contents of \fB.debug_static_funcs\fR,
|
|
\&\fB.debug_static_vars\fR and \fBdebug_weaknames\fR sections is not
|
|
currently supported.
|
|
.RE
|
|
.IP \fB\-\-dwarf\-depth=\fR\fIn\fR 4
|
|
.IX Item "--dwarf-depth=n"
|
|
Limit the dump of the \f(CW\*(C`.debug_info\*(C'\fR section to \fIn\fR children.
|
|
This is only useful with \fB\-\-debug\-dump=info\fR. The default is
|
|
to print all DIEs; the special value 0 for \fIn\fR will also have this
|
|
effect.
|
|
.Sp
|
|
With a non-zero value for \fIn\fR, DIEs at or deeper than \fIn\fR
|
|
levels will not be printed. The range for \fIn\fR is zero-based.
|
|
.IP \fB\-\-dwarf\-start=\fR\fIn\fR 4
|
|
.IX Item "--dwarf-start=n"
|
|
Print only DIEs beginning with the DIE numbered \fIn\fR. This is only
|
|
useful with \fB\-\-debug\-dump=info\fR.
|
|
.Sp
|
|
If specified, this option will suppress printing of any header
|
|
information and all DIEs before the DIE numbered \fIn\fR. Only
|
|
siblings and children of the specified DIE will be printed.
|
|
.Sp
|
|
This can be used in conjunction with \fB\-\-dwarf\-depth\fR.
|
|
.IP \fB\-\-dwarf\-check\fR 4
|
|
.IX Item "--dwarf-check"
|
|
Enable additional checks for consistency of Dwarf information.
|
|
.IP \fB\-\-ctf[=\fR\fIsection\fR\fB]\fR 4
|
|
.IX Item "--ctf[=section]"
|
|
Display the contents of the specified CTF section. CTF sections themselves
|
|
contain many subsections, all of which are displayed in order.
|
|
.Sp
|
|
By default, display the name of the section named \fI.ctf\fR, which is the
|
|
name emitted by \fBld\fR.
|
|
.IP \fB\-\-ctf\-parent=\fR\fImember\fR 4
|
|
.IX Item "--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 \fI.ctf\fR, like the section containing it, but it is possible to
|
|
change this name using the \f(CW\*(C`ctf_link_set_memb_name_changer\*(C'\fR
|
|
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, \fB\-\-ctf\-parent\fR can be used to specify the name
|
|
used for the parent.
|
|
.IP \fB\-\-sframe[=\fR\fIsection\fR\fB]\fR 4
|
|
.IX Item "--sframe[=section]"
|
|
Display the contents of the specified SFrame section.
|
|
.Sp
|
|
By default, display the name of the section named \fI.sframe\fR, which is the
|
|
name emitted by \fBld\fR.
|
|
.IP \fB\-G\fR 4
|
|
.IX Item "-G"
|
|
.PD 0
|
|
.IP \fB\-\-stabs\fR 4
|
|
.IX Item "--stabs"
|
|
.PD
|
|
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
|
|
\&\f(CW\*(C`.stab\*(C'\fR 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 \fB\-\-syms\fR
|
|
output.
|
|
.IP \fB\-\-start\-address=\fR\fIaddress\fR 4
|
|
.IX Item "--start-address=address"
|
|
Start displaying data at the specified address. This affects the output
|
|
of the \fB\-d\fR, \fB\-r\fR and \fB\-s\fR options.
|
|
.IP \fB\-\-stop\-address=\fR\fIaddress\fR 4
|
|
.IX Item "--stop-address=address"
|
|
Stop displaying data at the specified address. This affects the output
|
|
of the \fB\-d\fR, \fB\-r\fR and \fB\-s\fR options.
|
|
.IP \fB\-t\fR 4
|
|
.IX Item "-t"
|
|
.PD 0
|
|
.IP \fB\-\-syms\fR 4
|
|
.IX Item "--syms"
|
|
.PD
|
|
Print the symbol table entries of the file.
|
|
This is similar to the information provided by the \fBnm\fR 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:
|
|
.Sp
|
|
.Vb 2
|
|
\& [ 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
|
|
.Ve
|
|
.Sp
|
|
where the number inside the square brackets is the number of the entry
|
|
in the symbol table, the \fIsec\fR number is the section number, the
|
|
\&\fIfl\fR value are the symbol's flag bits, the \fIty\fR number is the
|
|
symbol's type, the \fIscl\fR number is the symbol's storage class and
|
|
the \fInx\fR value is the number of auxiliary entries associated with
|
|
the symbol. The last two fields are the symbol's value and its name.
|
|
.Sp
|
|
The other common output format, usually seen with ELF based files,
|
|
looks like this:
|
|
.Sp
|
|
.Vb 2
|
|
\& 00000000 l d .bss 00000000 .bss
|
|
\& 00000000 g .text 00000000 fred
|
|
.Ve
|
|
.Sp
|
|
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 \fI*ABS*\fR if the section is absolute (ie
|
|
not connected with any section), or \fI*UND*\fR if the section is
|
|
referenced in the file being dumped, but not defined there.
|
|
.Sp
|
|
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.
|
|
.Sp
|
|
The flag characters are divided into 7 groups as follows:
|
|
.RS 4
|
|
.ie n .IP """l""" 4
|
|
.el .IP \f(CWl\fR 4
|
|
.IX Item "l"
|
|
.PD 0
|
|
.ie n .IP """g""" 4
|
|
.el .IP \f(CWg\fR 4
|
|
.IX Item "g"
|
|
.ie n .IP """u""" 4
|
|
.el .IP \f(CWu\fR 4
|
|
.IX Item "u"
|
|
.ie n .IP """!""" 4
|
|
.el .IP \f(CW!\fR 4
|
|
.IX Item "!"
|
|
.PD
|
|
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.
|
|
.ie n .IP """w""" 4
|
|
.el .IP \f(CWw\fR 4
|
|
.IX Item "w"
|
|
The symbol is weak (w) or strong (a space).
|
|
.ie n .IP """C""" 4
|
|
.el .IP \f(CWC\fR 4
|
|
.IX Item "C"
|
|
The symbol denotes a constructor (C) or an ordinary symbol (a space).
|
|
.ie n .IP """W""" 4
|
|
.el .IP \f(CWW\fR 4
|
|
.IX Item "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.
|
|
.ie n .IP """I""" 4
|
|
.el .IP \f(CWI\fR 4
|
|
.IX Item "I"
|
|
.PD 0
|
|
.ie n .IP """i""" 4
|
|
.el .IP \f(CWi\fR 4
|
|
.IX Item "i"
|
|
.PD
|
|
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).
|
|
.ie n .IP """d""" 4
|
|
.el .IP \f(CWd\fR 4
|
|
.IX Item "d"
|
|
.PD 0
|
|
.ie n .IP """D""" 4
|
|
.el .IP \f(CWD\fR 4
|
|
.IX Item "D"
|
|
.PD
|
|
The symbol is a debugging symbol (d) or a dynamic symbol (D) or a
|
|
normal symbol (a space).
|
|
.ie n .IP """F""" 4
|
|
.el .IP \f(CWF\fR 4
|
|
.IX Item "F"
|
|
.PD 0
|
|
.ie n .IP """f""" 4
|
|
.el .IP \f(CWf\fR 4
|
|
.IX Item "f"
|
|
.ie n .IP """O""" 4
|
|
.el .IP \f(CWO\fR 4
|
|
.IX Item "O"
|
|
.PD
|
|
The symbol is the name of a function (F) or a file (f) or an object
|
|
(O) or just a normal symbol (a space).
|
|
.RE
|
|
.RS 4
|
|
.RE
|
|
.IP \fB\-T\fR 4
|
|
.IX Item "-T"
|
|
.PD 0
|
|
.IP \fB\-\-dynamic\-syms\fR 4
|
|
.IX Item "--dynamic-syms"
|
|
.PD
|
|
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 \fBnm\fR
|
|
program when given the \fB\-D\fR (\fB\-\-dynamic\fR) option.
|
|
.Sp
|
|
The output format is similar to that produced by the \fB\-\-syms\fR
|
|
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.
|
|
.IP \fB\-\-special\-syms\fR 4
|
|
.IX Item "--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.
|
|
.IP "\fB\-U\fR \fI[d|i|l|e|x|h]\fR" 4
|
|
.IX Item "-U [d|i|l|e|x|h]"
|
|
.PD 0
|
|
.IP \fB\-\-unicode=\fR\fI[default|invalid|locale|escape|hex|highlight]\fR 4
|
|
.IX Item "--unicode=[default|invalid|locale|escape|hex|highlight]"
|
|
.PD
|
|
Controls the display of UTF\-8 encoded multibyte characters in strings.
|
|
The default (\fB\-\-unicode=default\fR) is to give them no special
|
|
treatment. The \fB\-\-unicode=locale\fR option displays the sequence
|
|
in the current locale, which may or may not support them. The options
|
|
\&\fB\-\-unicode=hex\fR and \fB\-\-unicode=invalid\fR display them as
|
|
hex byte sequences enclosed by either angle brackets or curly braces.
|
|
.Sp
|
|
The \fB\-\-unicode=escape\fR option displays them as escape sequences
|
|
(\fI\euxxxx\fR) and the \fB\-\-unicode=highlight\fR 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.
|
|
.IP \fB\-V\fR 4
|
|
.IX Item "-V"
|
|
.PD 0
|
|
.IP \fB\-\-version\fR 4
|
|
.IX Item "--version"
|
|
.PD
|
|
Print the version number of \fBobjdump\fR and exit.
|
|
.IP \fB\-x\fR 4
|
|
.IX Item "-x"
|
|
.PD 0
|
|
.IP \fB\-\-all\-headers\fR 4
|
|
.IX Item "--all-headers"
|
|
.PD
|
|
Display all available header information, including the symbol table and
|
|
relocation entries. Using \fB\-x\fR is equivalent to specifying all of
|
|
\&\fB\-a \-f \-h \-p \-r \-t\fR.
|
|
.IP \fB\-w\fR 4
|
|
.IX Item "-w"
|
|
.PD 0
|
|
.IP \fB\-\-wide\fR 4
|
|
.IX Item "--wide"
|
|
.PD
|
|
Format some lines for output devices that have more than 80 columns.
|
|
Also do not truncate symbol names when they are displayed.
|
|
.IP \fB\-z\fR 4
|
|
.IX Item "-z"
|
|
.PD 0
|
|
.IP \fB\-\-disassemble\-zeroes\fR 4
|
|
.IX Item "--disassemble-zeroes"
|
|
.PD
|
|
Normally the disassembly output will skip blocks of zeroes. This
|
|
option directs the disassembler to disassemble those blocks, just like
|
|
any other data.
|
|
.IP \fB@\fR\fIfile\fR 4
|
|
.IX Item "@file"
|
|
Read command-line options from \fIfile\fR. The options read are
|
|
inserted in place of the original @\fIfile\fR option. If \fIfile\fR
|
|
does not exist, or cannot be read, then the option will be treated
|
|
literally, and not removed.
|
|
.Sp
|
|
Options in \fIfile\fR 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 \fIfile\fR may itself contain additional
|
|
@\fIfile\fR options; any such options will be processed recursively.
|
|
.SH "SEE ALSO"
|
|
.IX Header "SEE ALSO"
|
|
\&\fBnm\fR\|(1), \fBreadelf\fR\|(1), and the Info entries for \fIbinutils\fR.
|
|
.SH COPYRIGHT
|
|
.IX Header "COPYRIGHT"
|
|
Copyright (c) 1991\-2023 Free Software Foundation, Inc.
|
|
.PP
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the GNU Free Documentation License, Version 1.3
|
|
or any later version published by the Free Software Foundation;
|
|
with no Invariant Sections, with no Front-Cover Texts, and with no
|
|
Back-Cover Texts. A copy of the license is included in the
|
|
section entitled "GNU Free Documentation License".
|