llvm/docs/CommandGuide/llvm-readelf.md

# llvm-readelf - GNU-style LLVM Object Reader

:::{program} llvm-readelf
:::

## SYNOPSIS

{program}`llvm-readelf` \[*options*\] \[*input...*\]

## DESCRIPTION

The {program}`llvm-readelf` tool displays low-level format-specific information
about one or more object files.

If `input` is "`-`", {program}`llvm-readelf` reads from standard
input. Otherwise, it will read from the specified `filenames`.

## OPTIONS

::::{option} --addrsig
Display the address-significance table.

:::{option} --all, -a
:::

Equivalent to specifying all the main display options relevant to the file
format.
::::

:::{option} --arch-specific, -A
Display architecture-specific information, e.g. the ARM attributes section on ARM.
:::

:::{option} --bb-addr-map
Display the contents of the basic block address map section(s), which contain the
address of each function, along with the relative offset of each basic block.
:::

:::{option} --call-graph-info
Display the call graph section entries i.e. for each function
its identifying information, each of its direct callees' information
and for each indirect callee a 64-bit number representing the callee's
function signature. This information can be used to reconstruct
the program call graph. The output format is described in
{doc}`/CallGraphSection`.
:::

:::{option} --cg-profile
Display the callgraph profile section.
:::

:::{option} --decompress, -z
Dump decompressed section content when used with `-x` or `-p`.
If the section(s) are not compressed, they are displayed as is.
:::

:::{option} --demangle, -C
Display demangled symbol names in the output.
:::

:::{option} --dependent-libraries
Display the dependent libraries section.
:::

:::{option} --dynamic-table, --dynamic, -d
Display the dynamic table.
:::

:::{option} --dyn-relocations
Display the dynamic relocation entries.
:::

:::{option} --dyn-symbols, --dyn-syms
Display the dynamic symbol table.
:::

:::{option} --elf-linker-options
Display the linker options section.
:::

:::{option} --elf-output-style=<value>
Format ELF information in the specified style. Valid options are `LLVM`,
`GNU`, and `JSON`. `LLVM` output is an expanded and structured format.
`GNU` (the default) output mimics the equivalent GNU {program}`readelf`
output. `JSON` is JSON formatted output intended for machine consumption.
:::

:::{option} --extra-sym-info
Display extra information (section name) when showing symbols.
:::

:::{option} --expand-relocs
When used with {option}`--relocations`, display each relocation in an expanded
multi-line format.
:::

:::{option} --file-header, -h
Display file headers.
:::

:::{option} --gnu-hash-table
Display the GNU hash table for dynamic symbols.
:::

:::{option} --hash-symbols
Display the expanded hash table with dynamic symbol data.
:::

:::{option} --hash-table
Display the hash table for dynamic symbols.
:::

:::{option} --headers, -e
Equivalent to setting: {option}`--file-header`, {option}`--program-headers`,
and {option}`--sections`.
:::

:::{option} --help
Display a summary of command line options.
:::

:::{option} --hex-dump=<section[,section,...]>, -x
Display the specified section(s) as hexadecimal bytes. `section` may be a
section index or section name.
:::

:::{option} --histogram, -I
Display a bucket list histogram for dynamic symbol hash tables.
:::

:::{option} --memtag
Display information about memory tagging present in the binary. This includes
various memtag-specific dynamic entries, decoded global descriptor sections,
and decoded Android-specific ELF notes.
:::

:::{option} --needed-libs
Display the needed libraries.
:::

:::{option} --no-demangle
Do not display demangled symbol names in the output. On by default.
:::

:::{option} --notes, -n
Display all notes.
:::

:::{option} --offloading
Display list of HIP offload bundles.
:::

:::{option} --pretty-print
When used with {option}`--elf-output-style`, JSON output will be formatted in
a more readable format.
:::

:::{option} --program-headers, --segments, -l
Display the program headers.
:::

:::{option} --relocations, --relocs, -r
Display the relocation entries in the file.
:::

:::{option} --section-data
When used with {option}`--sections`, display section data for each section
shown. This option has no effect for GNU style output.
:::

:::{option} --section-details, -t
Display all section details. Used as an alternative to {option}`--sections`.
:::

:::{option} --section-groups, -g
Display section groups.
:::

:::{option} --section-mapping
Display the section to segment mapping.
:::

:::{option} --section-relocations
When used with {option}`--sections`, display relocations for each section
shown. This option has no effect for GNU style output.
:::

:::{option} --sections, --section-headers, -S
Display all sections.
:::

:::{option} --section-symbols
When used with {option}`--sections`, display symbols for each section shown.
This option has no effect for GNU style output.
:::

:::{option} --stackmap
Display contents of the stackmap section.
:::

:::{option} --stack-sizes
Display the contents of the stack sizes section(s), i.e. pairs of function
names and the size of their stack frames. In `LLVM` and `JSON` output (see
{option}`--elf-output-style`), each entry in a linked file also includes the
function's address.
:::

:::{option} --string-dump=<section[,section,...]>, -p
Display the specified section(s) as a list of strings. `section` may be a
section index or section name.
:::

:::{option} --symbols, --syms, -s
Display the symbol table. Also display the dynamic symbol table when using GNU output style for ELF.
:::

:::{option} --unwind, -u
Display unwind information.
:::

:::{option} --version
Display the version of the {program}`llvm-readelf` executable.
:::

:::{option} --version-info, -V
Display version sections.
:::

:::{option} --wide, -W
Ignored for GNU readelf compatibility. The output is already similar to when using -W with GNU readelf.
:::

:::{option} @<FILE>
Read command-line options from response file `<FILE>`.
:::

## EXIT STATUS

{program}`llvm-readelf` returns 0 under normal operation. It returns a non-zero
exit code if there were any errors.

## SEE ALSO

{manpage}`llvm-nm(1)`, {manpage}`llvm-objdump(1)`, {manpage}`llvm-readobj(1)`