982 lines
34 KiB
Groff
982 lines
34 KiB
Groff
.\" Automatically generated by Pod::Man 2.27 (Pod::Simple 3.28)
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.rm #[ #] #H #V #F C
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.\" ========================================================================
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.\"
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.IX Title "OBJDUMP 1"
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.TH OBJDUMP 1 "2017-02-16" "binutils-2.27.0" "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"
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|
objdump \- display information from object files.
|
|
.SH "SYNOPSIS"
|
|
.IX Header "SYNOPSIS"
|
|
objdump [\fB\-a\fR|\fB\-\-archive\-headers\fR]
|
|
[\fB\-b\fR \fIbfdname\fR|\fB\-\-target=\fR\fIbfdname\fR]
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|
[\fB\-C\fR|\fB\-\-demangle\fR[=\fIstyle\fR] ]
|
|
[\fB\-d\fR|\fB\-\-disassemble\fR]
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[\fB\-D\fR|\fB\-\-disassemble\-all\fR]
|
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[\fB\-z\fR|\fB\-\-disassemble\-zeroes\fR]
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|
[\fB\-EB\fR|\fB\-EL\fR|\fB\-\-endian=\fR{big | little }]
|
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[\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\-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[lLiaprmfFsoRt]\fR|
|
|
\fB\-\-dwarf\fR[=rawline,=decodedline,=info,=abbrev,=pubnames]
|
|
[=aranges,=macro,=frames,=frames\-interp,=str,=loc]
|
|
[=Ranges,=pubtypes,=trace_info,=trace_abbrev]
|
|
[=trace_aranges,=gdb_index]
|
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[\fB\-G\fR|\fB\-\-stabs\fR]
|
|
[\fB\-t\fR|\fB\-\-syms\fR]
|
|
[\fB\-T\fR|\fB\-\-dynamic\-syms\fR]
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[\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\-\-prefix\-addresses\fR]
|
|
[\fB\-\-[no\-]show\-raw\-insn\fR]
|
|
[\fB\-\-adjust\-vma=\fR\fIoffset\fR]
|
|
[\fB\-\-dwarf\-depth=\fR\fIn\fR]
|
|
[\fB\-\-dwarf\-start=\fR\fIn\fR]
|
|
[\fB\-\-special\-syms\fR]
|
|
[\fB\-\-prefix=\fR\fIprefix\fR]
|
|
[\fB\-\-prefix\-strip=\fR\fIlevel\fR]
|
|
[\fB\-\-insn\-width=\fR\fIwidth\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 \s-1VAX\s0 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\-g\fR" 4
|
|
.IX Item "-g"
|
|
.PD 0
|
|
.IP "\fB\-\-debugging\fR" 4
|
|
.IX Item "--debugging"
|
|
.PD
|
|
Display debugging information. This attempts to parse \s-1STABS\s0 and \s-1IEEE\s0
|
|
debugging format information stored in the file and print it out using
|
|
a C like syntax. If neither of these formats are found this option
|
|
falls back on the \fB\-W\fR option to print any \s-1DWARF\s0 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"
|
|
.PD
|
|
Display the assembler mnemonics for the machine instructions from
|
|
\&\fIobjfile\fR. This option only disassembles those sections which are
|
|
expected to contain instructions.
|
|
.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 sections, not just
|
|
those expected to contain instructions.
|
|
.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 \s-1ARM\s0 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.
|
|
.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
|
|
\&\s-1READONLY\s0 and the \s-1NOREAD\s0 attributes set. In such cases the \s-1NOREAD\s0
|
|
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 only for section \fIname\fR.
|
|
.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
|
|
If the target is an \s-1ARM\s0 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
|
|
If the target is an \s-1ARM\s0 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 \s-1ARM\s0'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 \s-1ARM\s0
|
|
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 \s-1APCS\s0 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 \s-1ARM\s0 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 the x86, some of the options duplicate functions of the \fB\-m\fR
|
|
switch, but allow finer grained control. Multiple selections from the
|
|
following may be specified as a comma separated string.
|
|
.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 \s-1AT&T\s0 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 \s-1AMD64 ISA\s0 and Intel64 \s-1ISA.\s0
|
|
.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 \s-1AT&T\s0 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 four 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 \s-1AT&T\s0 mode, instructs the disassembler to print a mnemonic
|
|
suffix even when the suffix could be inferred by the operands.
|
|
.RE
|
|
.RS 4
|
|
.Sp
|
|
For PowerPC, \fBbooke\fR controls the disassembly of BookE
|
|
instructions. \fB32\fR and \fB64\fR select PowerPC and
|
|
PowerPC64 disassembly, respectively. \fBe300\fR selects
|
|
disassembly for the e300 family. \fB440\fR selects disassembly for
|
|
the PowerPC 440. \fBppcps\fR selects disassembly for the paired
|
|
single instructions of the \s-1PPC750CL.\s0
|
|
.Sp
|
|
For \s-1MIPS,\s0 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 \s-1MSA\s0 instructions.
|
|
.ie n .IP """virt""" 4
|
|
.el .IP "\f(CWvirt\fR" 4
|
|
.IX Item "virt"
|
|
Disassemble the virtualization \s-1ASE\s0 instructions.
|
|
.ie n .IP """xpa""" 4
|
|
.el .IP "\f(CWxpa\fR" 4
|
|
.IX Item "xpa"
|
|
Disassemble the eXtended Physical Address (\s-1XPA\s0) \s-1ASE\s0 instructions.
|
|
.ie n .IP """gpr\-names=\f(CIABI\f(CW""" 4
|
|
.el .IP "\f(CWgpr\-names=\f(CIABI\f(CW\fR" 4
|
|
.IX Item "gpr-names=ABI"
|
|
Print \s-1GPR \s0(general-purpose register) names as appropriate
|
|
for the specified \s-1ABI. \s0 By default, \s-1GPR\s0 names are selected according to
|
|
the \s-1ABI\s0 of the binary being disassembled.
|
|
.ie n .IP """fpr\-names=\f(CIABI\f(CW""" 4
|
|
.el .IP "\f(CWfpr\-names=\f(CIABI\f(CW\fR" 4
|
|
.IX Item "fpr-names=ABI"
|
|
Print \s-1FPR \s0(floating-point register) names as
|
|
appropriate for the specified \s-1ABI. \s0 By default, \s-1FPR\s0 numbers are printed
|
|
rather than names.
|
|
.ie n .IP """cp0\-names=\f(CIARCH\f(CW""" 4
|
|
.el .IP "\f(CWcp0\-names=\f(CIARCH\f(CW\fR" 4
|
|
.IX Item "cp0-names=ARCH"
|
|
Print \s-1CP0 \s0(system control coprocessor; coprocessor 0) register names
|
|
as appropriate for the \s-1CPU\s0 or architecture specified by
|
|
\&\fI\s-1ARCH\s0\fR. By default, \s-1CP0\s0 register names are selected according to
|
|
the architecture and \s-1CPU\s0 of the binary being disassembled.
|
|
.ie n .IP """hwr\-names=\f(CIARCH\f(CW""" 4
|
|
.el .IP "\f(CWhwr\-names=\f(CIARCH\f(CW\fR" 4
|
|
.IX Item "hwr-names=ARCH"
|
|
Print \s-1HWR \s0(hardware register, used by the \f(CW\*(C`rdhwr\*(C'\fR instruction) names
|
|
as appropriate for the \s-1CPU\s0 or architecture specified by
|
|
\&\fI\s-1ARCH\s0\fR. By default, \s-1HWR\s0 names are selected according to
|
|
the architecture and \s-1CPU\s0 of the binary being disassembled.
|
|
.ie n .IP """reg\-names=\f(CIABI\f(CW""" 4
|
|
.el .IP "\f(CWreg\-names=\f(CIABI\f(CW\fR" 4
|
|
.IX Item "reg-names=ABI"
|
|
Print \s-1GPR\s0 and \s-1FPR\s0 names as appropriate for the selected \s-1ABI.\s0
|
|
.ie n .IP """reg\-names=\f(CIARCH\f(CW""" 4
|
|
.el .IP "\f(CWreg\-names=\f(CIARCH\f(CW\fR" 4
|
|
.IX Item "reg-names=ARCH"
|
|
Print CPU-specific register names (\s-1CP0\s0 register and \s-1HWR\s0 names)
|
|
as appropriate for the selected \s-1CPU\s0 or architecture.
|
|
.RE
|
|
.RS 4
|
|
.Sp
|
|
For any of the options listed above, \fI\s-1ABI\s0\fR or
|
|
\&\fI\s-1ARCH\s0\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 \fI\s-1ABI\s0\fR and \fI\s-1ARCH\s0\fR using
|
|
the \fB\-\-help\fR option.
|
|
.Sp
|
|
For \s-1VAX,\s0 you can specify function entry addresses with \fB\-M
|
|
entry:0xf00ba\fR. You can use this multiple times to properly
|
|
disassemble \s-1VAX\s0 binary files that don't contain symbol tables (like
|
|
\&\s-1ROM\s0 dumps). In these cases, the function entry mask would otherwise
|
|
be decoded as \s-1VAX\s0 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 \s-1XCOFF,\s0 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
|
|
Not all object formats support this option. In particular the \s-1ELF\s0
|
|
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 any sections requested. By default all
|
|
non-empty 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\-\-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\-W[lLiaprmfFsoRt]\fR" 4
|
|
.IX Item "-W[lLiaprmfFsoRt]"
|
|
.PD 0
|
|
.IP "\fB\-\-dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames]\fR" 4
|
|
.IX Item "--dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames]"
|
|
.IP "\fB\-\-dwarf[=aranges,=macro,=frames,=frames\-interp,=str,=loc]\fR" 4
|
|
.IX Item "--dwarf[=aranges,=macro,=frames,=frames-interp,=str,=loc]"
|
|
.IP "\fB\-\-dwarf[=Ranges,=pubtypes,=trace_info,=trace_abbrev]\fR" 4
|
|
.IX Item "--dwarf[=Ranges,=pubtypes,=trace_info,=trace_abbrev]"
|
|
.IP "\fB\-\-dwarf[=trace_aranges,=gdb_index]\fR" 4
|
|
.IX Item "--dwarf[=trace_aranges,=gdb_index]"
|
|
.PD
|
|
Displays the contents of the debug sections in the file, if any are
|
|
present. If one of the optional letters or words follows the switch
|
|
then only data found in those specific sections will be dumped.
|
|
.Sp
|
|
Note that there is no single letter option to display the content of
|
|
trace sections or .gdb_index.
|
|
.Sp
|
|
Note: the output from the \fB=info\fR option can also be affected
|
|
by the options \fB\-\-dwarf\-depth\fR, the \fB\-\-dwarf\-start\fR and
|
|
the \fB\-\-dwarf\-check\fR.
|
|
.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\-\-dwarf=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 \s-1DIE\s0 numbered \fIn\fR. This is only
|
|
useful with \fB\-\-dwarf=info\fR.
|
|
.Sp
|
|
If specified, this option will suppress printing of any header
|
|
information and all DIEs before the \s-1DIE\s0 numbered \fIn\fR. Only
|
|
siblings and children of the specified \s-1DIE\s0 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\-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
|
|
\&\s-1ELF\s0 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 \s-1ELF\s0
|
|
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 auxilary 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 \s-1ELF\s0 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 refered 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 \s-1GNU\s0 extension to the standard set of \s-1ELF\s0 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.
|
|
.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\-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"
|
|
\&\fInm\fR\|(1), \fIreadelf\fR\|(1), and the Info entries for \fIbinutils\fR.
|
|
.SH "COPYRIGHT"
|
|
.IX Header "COPYRIGHT"
|
|
Copyright (c) 1991\-2016 Free Software Foundation, Inc.
|
|
.PP
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the \s-1GNU\s0 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 \*(L"\s-1GNU\s0 Free Documentation License\*(R".
|