llvm-objdump man page

llvm-objdump ā€” LLVM's object file dumper

Synopsis

llvm-objdump [commands] [options] [filenames...]

Description

The llvm-objdump utility prints the contents of object files and final linked images named on the command line. If no file name is specified, llvm-objdump will attempt to read from a.out. If - is used as a file name, 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:

-a, --archive-headers

Display the information contained within an archive's headers.

-d, --disassemble

Disassemble all text sections found in the input files.

-D, --disassemble-all

Disassemble all sections found in the input files.

--disassemble-functions=<symbol1[,symbol2,...]>

Disassemble only the specified symbols. Takes demangled symbol names when --demangle is specified, otherwise takes mangled symbol names. Implies --disassemble.

--dwarf=<value>

Dump the specified DWARF debug sections. The supported values are:

frames - .debug_frame

-f, --file-headers

Display the contents of the overall file header.

--fault-map-section

Display the content of the fault map section.

-h, --headers, --section-headers

Display summaries of the headers for each section.

--help

Display usage information and exit. Does not stack with other commands.

-p, --private-headers

Display format-specific file headers.

-r, --reloc

Display the relocation entries in the file.

-R, --dynamic-reloc

Display the dynamic relocation entries in the file.

--raw-clang-ast

Dump the raw binary contents of the clang AST section.

-s, --full-contents

Display the contents of each section.

-t, --syms

Display the symbol table.

-u, --unwind-info

Display the unwind info of the input(s).

--version

Display the version of this program. Does not stack with other commands.

-x, --all-headers

Display all available header information. Equivalent to specifying --archive-headers, --file-headers, --private-headers, --reloc, --section-headers, and --syms.

Options

llvm-objdump supports the following options:

--adjust-vma=<offset>

Increase the displayed address in disassembly or section header printing by the specified offset.

--arch-name=<string>

Specify the target architecture when disassembling. Use --version for a list of available targets.

-C, --demangle

Demangle symbol names in the output.

-j, --section=<section1[,section2,...]>

Perform commands on the specified sections only. For Mach-O use segment,section to specify the section name.

-l, --line-numbers

When disassembling, display source line numbers. Implies --disassemble.

-M, --disassembler-options=<opt1[,opt2,...]>

Pass target-specific disassembler options. Currently supported for ARM targets only. Available options are reg-names-std and reg-names-raw.

--mcpu=<cpu-name>

Target a specific CPU type for disassembly. Specify --mcpu=help to display available CPUs.

--mattr=<a1,+a2,-a3,...>

Enable/disable target-specific attributes. Specify --mcpu=help to display the available attributes.

--no-leading-addr

When disassembling, do not print leading addresses.

--no-show-raw-insn

When disassembling, do not print the raw bytes of each instruction.

--print-imm-hex

Use hex format when printing immediate values in disassembly output.

-S, --source

When disassembling, display source interleaved with the disassembly. Implies --disassemble.

--show-lma

Display the LMA column when dumping ELF section headers. Defaults to off unless any section has different VMA and LMAs.

--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.

--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.

--triple=<string>

Target triple to disassemble for, see --version for available targets.

-w, --wide

Ignored for compatibility with GNU objdump.

--x86-asm-syntax=<style>

When used with --disassemble, choose style of code to emit from X86 backend. Supported values are:

att

AT&T-style assembly

intel

Intel-style assembly

The default disassembly style is att.

-z, --disassemble-zeroes

Do not skip blocks of zeroes when disassembling.

@<FILE>

Read command-line options and commands from response file <FILE>.

Mach-O Only Options and Commands

--arch=<architecture>

Specify the architecture to disassemble. see --version for available architectures.

--archive-member-offsets

Print the offset to each archive member for Mach-O archives (requires --archive-headers).

--bind

Display binding info

--cfg

Create a CFG for every symbol in the object file and write it to a graphviz file.

--data-in-code

Display the data in code table.

--dis-symname=<name>

Disassemble just the specified symbol's instructions.

--dylibs-used

Display the shared libraries used for linked files.

--dsym=<string>

Use .dSYM file for debug info.

--dylib-id

Display the shared library's ID for dylib files.

--exports-trie

Display exported symbols.

-g

Print line information from debug info if available.

--full-leading-addr

Print the full leading address when disassembling.

--indirect-symbols

Display the indirect symbol table.

--info-plist

Display the info plist section as strings.

--lazy-bind

Display lazy binding info.

--link-opt-hints

Display the linker optimization hints.

-m, --macho

Use Mach-O specific object file parser. Commands and other options may behave differently when used with --macho.

--no-leading-headers

Do not print any leading headers.

--no-symbolic-operands

Do not print symbolic operands when disassembling.

--non-verbose

Display the information for Mach-O objects in non-verbose or numeric form.

--objc-meta-data

Display the Objective-C runtime meta data.

--private-header

Display only the first format specific file header.

--rebase

Display rebasing information.

--universal-headers

Display universal headers.

--weak-bind

Display weak binding information.

Bugs

To report bugs, please visit <http://llvm.org/bugs/>.

See Also

llvm-nm(1), llvm-readelf(1), llvm-readobj(1)

Author

Maintained by the LLVM Team (https://llvm.org/).

Referenced By

llvm-nm(1), llvm-readelf(1), llvm-readobj(1).

2019-09-30 LLVM