forked from OSchip/llvm-project
405 lines
9.8 KiB
ReStructuredText
405 lines
9.8 KiB
ReStructuredText
llvm-objdump - LLVM's object file dumper
|
|
========================================
|
|
|
|
.. program:: llvm-objdump
|
|
|
|
SYNOPSIS
|
|
--------
|
|
|
|
:program:`llvm-objdump` [*commands*] [*options*] [*filenames...*]
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
The :program:`llvm-objdump` utility prints the contents of object files and
|
|
final linked images named on the command line. If no file name is specified,
|
|
:program:`llvm-objdump` will attempt to read from *a.out*. If *-* is used as a
|
|
file name, :program:`llvm-objdump` will process a file on its standard input
|
|
stream.
|
|
|
|
COMMANDS
|
|
--------
|
|
At least one of the following commands are required, and some commands can be
|
|
combined with other commands:
|
|
|
|
.. option:: -a, --archive-headers
|
|
|
|
Display the information contained within an archive's headers.
|
|
|
|
.. option:: -d, --disassemble
|
|
|
|
Disassemble all text sections found in the input files.
|
|
|
|
.. option:: -D, --disassemble-all
|
|
|
|
Disassemble all sections found in the input files.
|
|
|
|
.. option:: --disassemble-symbols=<symbol1[,symbol2,...]>
|
|
|
|
Disassemble only the specified symbols. Takes demangled symbol names when
|
|
:option:`--demangle` is specified, otherwise takes mangled symbol names.
|
|
Implies :option:`--disassemble`.
|
|
|
|
.. option:: --dwarf=<value>
|
|
|
|
Dump the specified DWARF debug sections. The supported values are:
|
|
|
|
`frames` - .debug_frame
|
|
|
|
.. option:: -f, --file-headers
|
|
|
|
Display the contents of the overall file header.
|
|
|
|
.. option:: --fault-map-section
|
|
|
|
Display the content of the fault map section.
|
|
|
|
.. option:: -h, --headers, --section-headers
|
|
|
|
Display summaries of the headers for each section.
|
|
|
|
.. option:: --help
|
|
|
|
Display usage information and exit. Does not stack with other commands.
|
|
|
|
.. option:: -p, --private-headers
|
|
|
|
Display format-specific file headers.
|
|
|
|
.. option:: -r, --reloc
|
|
|
|
Display the relocation entries in the file.
|
|
|
|
.. option:: -R, --dynamic-reloc
|
|
|
|
Display the dynamic relocation entries in the file.
|
|
|
|
.. option:: --raw-clang-ast
|
|
|
|
Dump the raw binary contents of the clang AST section.
|
|
|
|
.. option:: -s, --full-contents
|
|
|
|
Display the contents of each section.
|
|
|
|
.. option:: -t, --syms
|
|
|
|
Display the symbol table.
|
|
|
|
.. option:: -T, --dynamic-syms
|
|
|
|
Display the contents of the dynamic symbol table.
|
|
|
|
.. option:: -u, --unwind-info
|
|
|
|
Display the unwind info of the input(s).
|
|
|
|
.. option:: -v, --version
|
|
|
|
Display the version of the :program:`llvm-objdump` executable. Does not stack
|
|
with other commands.
|
|
|
|
.. option:: -x, --all-headers
|
|
|
|
Display all available header information. Equivalent to specifying
|
|
:option:`--archive-headers`, :option:`--file-headers`,
|
|
:option:`--private-headers`, :option:`--reloc`, :option:`--section-headers`,
|
|
and :option:`--syms`.
|
|
|
|
OPTIONS
|
|
-------
|
|
:program:`llvm-objdump` supports the following options:
|
|
|
|
.. option:: --adjust-vma=<offset>
|
|
|
|
Increase the displayed address in disassembly or section header printing by
|
|
the specified offset.
|
|
|
|
.. option:: --arch-name=<string>
|
|
|
|
Specify the target architecture when disassembling. Use :option:`--version`
|
|
for a list of available targets.
|
|
|
|
.. option:: -C, --demangle
|
|
|
|
Demangle symbol names in the output.
|
|
|
|
.. option:: --debug-vars=<format>
|
|
|
|
Print the locations (in registers or memory) of source-level variables
|
|
alongside disassembly. ``format`` may be ``unicode`` or ``ascii``, defaulting
|
|
to ``unicode`` if omitted.
|
|
|
|
.. option:: --debug-vars-indent=<width>
|
|
|
|
Distance to indent the source-level variable display, relative to the start
|
|
of the disassembly. Defaults to 52 characters.
|
|
|
|
.. option:: -j, --section=<section1[,section2,...]>
|
|
|
|
Perform commands on the specified sections only. For Mach-O use
|
|
`segment,section` to specify the section name.
|
|
|
|
.. option:: -l, --line-numbers
|
|
|
|
When disassembling, display source line numbers. Implies
|
|
:option:`--disassemble`.
|
|
|
|
.. option:: -M, --disassembler-options=<opt1[,opt2,...]>
|
|
|
|
Pass target-specific disassembler options. Available options:
|
|
|
|
* ``reg-names-std``: ARM only (default). Print in ARM 's instruction set documentation, with r13/r14/r15 replaced by sp/lr/pc.
|
|
* ``reg-names-raw``: ARM only. Use r followed by the register number.
|
|
* ``no-aliases``: AArch64 and RISC-V only. Print raw instruction mnemonic instead of pesudo instruction mnemonic.
|
|
* ``numeric``: RISC-V only. Print raw register names instead of ABI mnemonic. (e.g. print x1 instead of ra)
|
|
* ``att``: x86 only (default). Print in the AT&T syntax.
|
|
* ``intel``: x86 only. Print in the intel syntax.
|
|
|
|
.. option:: --mcpu=<cpu-name>
|
|
|
|
Target a specific CPU type for disassembly. Specify ``--mcpu=help`` to display
|
|
available CPUs.
|
|
|
|
.. option:: --mattr=<a1,+a2,-a3,...>
|
|
|
|
Enable/disable target-specific attributes. Specify ``--mattr=help`` to display
|
|
the available attributes.
|
|
|
|
.. option:: --no-leading-addr
|
|
|
|
When disassembling, do not print leading addresses.
|
|
|
|
.. option:: --no-print-imm-hex
|
|
|
|
Do not use hex format for immediate values in disassembly output (default).
|
|
|
|
.. option:: --no-show-raw-insn
|
|
|
|
When disassembling, do not print the raw bytes of each instruction.
|
|
|
|
.. option:: --prefix=<prefix>
|
|
|
|
When disassembling with the :option:`--source` option, prepend ``prefix`` to
|
|
absolute paths.
|
|
|
|
.. option:: --prefix-strip=<level>
|
|
|
|
When disassembling with the :option:`--source` option, strip out ``level``
|
|
initial directories from absolute paths. This option has no effect without
|
|
:option:`--prefix`.
|
|
|
|
.. option:: --print-imm-hex
|
|
|
|
Use hex format when printing immediate values in disassembly output.
|
|
|
|
.. option:: -S, --source
|
|
|
|
When disassembling, display source interleaved with the disassembly. Implies
|
|
:option:`--disassemble`.
|
|
|
|
.. option:: --show-lma
|
|
|
|
Display the LMA column when dumping ELF section headers. Defaults to off
|
|
unless any section has different VMA and LMAs.
|
|
|
|
.. option:: --start-address=<address>
|
|
|
|
When disassembling, only disassemble from the specified address.
|
|
|
|
When printing relocations, only print the relocations patching offsets from at least ``address``.
|
|
|
|
When printing symbols, only print symbols with a value of at least ``address``.
|
|
|
|
.. option:: --stop-address=<address>
|
|
|
|
When disassembling, only disassemble up to, but not including the specified address.
|
|
|
|
When printing relocations, only print the relocations patching offsets up to ``address``.
|
|
|
|
When printing symbols, only print symbols with a value up to ``address``.
|
|
|
|
.. option:: --symbolize-operands
|
|
|
|
When disassembling, symbolize a branch target operand to print a label instead of a real address.
|
|
|
|
When printing a PC-relative global symbol reference, print it as an offset from the leading symbol.
|
|
|
|
Only works with an X86 linked image.
|
|
|
|
Example:
|
|
A non-symbolized branch instruction with a local target and pc-relative memory access like
|
|
|
|
.. code-block:: none
|
|
|
|
cmp eax, dword ptr [rip + 4112]
|
|
jge 0x20117e <_start+0x25>
|
|
|
|
might become
|
|
|
|
.. code-block:: none
|
|
|
|
<L0>:
|
|
cmp eax, dword ptr <g>
|
|
jge <L0>
|
|
|
|
.. option:: --triple=<string>
|
|
|
|
Target triple to disassemble for, see ``--version`` for available targets.
|
|
|
|
.. option:: -w, --wide
|
|
|
|
Ignored for compatibility with GNU objdump.
|
|
|
|
.. option:: --x86-asm-syntax=<style>
|
|
|
|
Deprecated.
|
|
When used with :option:`--disassemble`, choose style of code to emit from
|
|
X86 backend. Supported values are:
|
|
|
|
.. option:: att
|
|
|
|
AT&T-style assembly
|
|
|
|
.. option:: intel
|
|
|
|
Intel-style assembly
|
|
|
|
|
|
The default disassembly style is **att**.
|
|
|
|
.. option:: -z, --disassemble-zeroes
|
|
|
|
Do not skip blocks of zeroes when disassembling.
|
|
|
|
.. option:: @<FILE>
|
|
|
|
Read command-line options and commands from response file `<FILE>`.
|
|
|
|
MACH-O ONLY OPTIONS AND COMMANDS
|
|
--------------------------------
|
|
|
|
.. option:: --arch=<architecture>
|
|
|
|
Specify the architecture to disassemble. see ``--version`` for available
|
|
architectures.
|
|
|
|
.. option:: --archive-member-offsets
|
|
|
|
Print the offset to each archive member for Mach-O archives (requires
|
|
:option:`--archive-headers`).
|
|
|
|
.. option:: --bind
|
|
|
|
Display binding info
|
|
|
|
.. option:: --data-in-code
|
|
|
|
Display the data in code table.
|
|
|
|
.. option:: --dis-symname=<name>
|
|
|
|
Disassemble just the specified symbol's instructions.
|
|
|
|
.. option:: --dylibs-used
|
|
|
|
Display the shared libraries used for linked files.
|
|
|
|
.. option:: --dsym=<string>
|
|
|
|
Use .dSYM file for debug info.
|
|
|
|
.. option:: --dylib-id
|
|
|
|
Display the shared library's ID for dylib files.
|
|
|
|
.. option:: --exports-trie
|
|
|
|
Display exported symbols.
|
|
|
|
.. option:: --function-starts
|
|
|
|
Print the function starts table for Mach-O objects.
|
|
|
|
.. option:: -g
|
|
|
|
Print line information from debug info if available.
|
|
|
|
.. option:: --full-leading-addr
|
|
|
|
Print the full leading address when disassembling.
|
|
|
|
.. option:: --indirect-symbols
|
|
|
|
Display the indirect symbol table.
|
|
|
|
.. option:: --info-plist
|
|
|
|
Display the info plist section as strings.
|
|
|
|
.. option:: --lazy-bind
|
|
|
|
Display lazy binding info.
|
|
|
|
.. option:: --link-opt-hints
|
|
|
|
Display the linker optimization hints.
|
|
|
|
.. option:: -m, --macho
|
|
|
|
Use Mach-O specific object file parser. Commands and other options may behave
|
|
differently when used with ``--macho``.
|
|
|
|
.. option:: --no-leading-headers
|
|
|
|
Do not print any leading headers.
|
|
|
|
.. option:: --no-symbolic-operands
|
|
|
|
Do not print symbolic operands when disassembling.
|
|
|
|
.. option:: --non-verbose
|
|
|
|
Display the information for Mach-O objects in non-verbose or numeric form.
|
|
|
|
.. option:: --objc-meta-data
|
|
|
|
Display the Objective-C runtime meta data.
|
|
|
|
.. option:: --private-header
|
|
|
|
Display only the first format specific file header.
|
|
|
|
.. option:: --rebase
|
|
|
|
Display rebasing information.
|
|
|
|
.. option:: --rpaths
|
|
|
|
Display runtime search paths for the binary.
|
|
|
|
.. option:: --universal-headers
|
|
|
|
Display universal headers.
|
|
|
|
.. option:: --weak-bind
|
|
|
|
Display weak binding information.
|
|
|
|
XCOFF ONLY OPTIONS AND COMMANDS
|
|
---------------------------------
|
|
|
|
.. option:: --symbol-description
|
|
|
|
Add symbol description to disassembly output.
|
|
|
|
BUGS
|
|
----
|
|
|
|
To report bugs, please visit <https://bugs.llvm.org/>.
|
|
|
|
SEE ALSO
|
|
--------
|
|
|
|
:manpage:`llvm-nm(1)`, :manpage:`llvm-otool(1)`, :manpage:`llvm-readelf(1)`,
|
|
:manpage:`llvm-readobj(1)`
|