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41cf18166c
There is no way to dump SHT_LLVM_DEPENDENT_LIBRARIES sections currently. This patch implements this. The section is described here: https://llvm.org/docs/Extensions.html#sht-llvm-dependent-libraries-section-dependent-libraries Differential revision: https://reviews.llvm.org/D70665
319 lines
7.5 KiB
ReStructuredText
319 lines
7.5 KiB
ReStructuredText
llvm-readobj - LLVM Object Reader
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=================================
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.. program:: llvm-readobj
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SYNOPSIS
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--------
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:program:`llvm-readobj` [*options*] [*input...*]
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DESCRIPTION
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-----------
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The :program:`llvm-readobj` tool displays low-level format-specific information
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about one or more object files.
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If ``input`` is "``-``" or omitted, :program:`llvm-readobj` reads from standard
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input. Otherwise, it will read from the specified ``filenames``.
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DIFFERENCES TO LLVM-READELF
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---------------------------
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:program:`llvm-readelf` is an alias for the :manpage:`llvm-readobj` tool with a
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slightly different command-line interface and output that is GNU compatible.
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Following is a list of differences between :program:`llvm-readelf` and
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:program:`llvm-readobj`:
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- :program:`llvm-readelf` uses `GNU` for the :option:`--elf-output-style` option
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by default. :program:`llvm-readobj` uses `LLVM`.
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- :program:`llvm-readelf` allows single-letter grouped flags (e.g.
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``llvm-readelf -SW`` is the same as ``llvm-readelf -S -W``).
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:program:`llvm-readobj` does not allow grouping.
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- :program:`llvm-readelf` provides :option:`-s` as an alias for
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:option:`--symbols`, for GNU :program:`readelf` compatibility, whereas it is
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an alias for :option:`--section-headers` in :program:`llvm-readobj`.
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- :program:`llvm-readobj` provides ``-t`` as an alias for :option:`--symbols`.
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:program:`llvm-readelf` does not.
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- :program:`llvm-readobj` provides ``--sr``, ``--sd``, ``--st`` and ``--dt`` as
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aliases for :option:`--section-relocations`, :option:`--section-data`,
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:option:`--section-symbols` and :option:`--dyn-symbols` respectively.
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:program:`llvm-readelf` does not provide these aliases, to avoid conflicting
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with grouped flags.
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GENERAL AND MULTI-FORMAT OPTIONS
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--------------------------------
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These options are applicable to more than one file format, or are unrelated to
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file formats.
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.. option:: --all
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Equivalent to specifying all the main display options relevant to the file
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format.
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.. option:: --addrsig
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Display the address-significance table.
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.. option:: --color
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Use colors in the output for warnings and errors.
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.. option:: --expand-relocs
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When used with :option:`--relocations`, display each relocation in an expanded
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multi-line format.
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.. option:: --file-headers, -h
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Display file headers.
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.. option:: --headers, -e
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Equivalent to setting: :option:`--file-headers`, :option:`--program-headers`,
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and :option:`--sections`.
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.. option:: --help
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Display a summary of command line options.
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.. option:: --help-list
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Display an uncategorized summary of command line options.
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.. option:: --hex-dump=<section[,section,...]>, -x
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Display the specified section(s) as hexadecimal bytes. ``section`` may be a
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section index or section name.
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.. option:: --needed-libs
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Display the needed libraries.
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.. option:: --relocations, --relocs, -r
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Display the relocation entries in the file.
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.. option:: --sections, --section-headers, -s, -S
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Display all sections.
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.. option:: --section-data, --sd
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When used with :option:`--sections`, display section data for each section
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shown. This option has no effect for GNU style output.
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.. option:: --section-relocations, --sr
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When used with :option:`--sections`, display relocations for each section
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shown. This option has no effect for GNU style output.
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.. option:: --section-symbols, --st
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When used with :option:`--sections`, display symbols for each section shown.
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This option has no effect for GNU style output.
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.. option:: --stackmap
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Display contents of the stackmap section.
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.. option:: --string-dump=<section[,section,...]>, -p
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Display the specified section(s) as a list of strings. ``section`` may be a
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section index or section name.
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.. option:: --symbols, --syms, -t
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Display the symbol table.
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.. option:: --unwind, -u
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Display unwind information.
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.. option:: --version
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Display the version of the :program:`llvm-readobj` executable.
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.. option:: @<FILE>
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Read command-line options from response file `<FILE>`.
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ELF SPECIFIC OPTIONS
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--------------------
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The following options are implemented only for the ELF file format.
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.. option:: --arch-specific, -A
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Display architecture-specific information, e.g. the ARM attributes section on ARM.
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.. option:: --demangle, -C
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Display demangled symbol names in the output.
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.. option:: --dependent-libraries
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Display the dependent libraries section.
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.. option:: --dyn-relocations
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Display the dynamic relocation entries.
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.. option:: --dyn-symbols, --dyn-syms, --dt
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Display the dynamic symbol table.
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.. option:: --dynamic-table, --dynamic, -d
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Display the dynamic table.
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.. option:: --elf-cg-profile
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Display the callgraph profile section.
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.. option:: --elf-hash-histogram, --histogram, -I
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Display a bucket list histogram for dynamic symbol hash tables.
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.. option:: --elf-linker-options
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Display the linker options section.
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.. option:: --elf-output-style=<value>
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Format ELF information in the specified style. Valid options are ``LLVM`` and
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``GNU``. ``LLVM`` output (the default) is an expanded and structured format,
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whilst ``GNU`` output mimics the equivalent GNU :program:`readelf` output.
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.. option:: --elf-section-groups, --section-groups, -g
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Display section groups.
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.. option:: --gnu-hash-table
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Display the GNU hash table for dynamic symbols.
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.. option:: --hash-symbols
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Display the expanded hash table with dynamic symbol data.
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.. option:: --hash-table
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Display the hash table for dynamic symbols.
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.. option:: --notes, -n
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Display all notes.
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.. option:: --program-headers, --segments, -l
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Display the program headers.
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.. option:: --raw-relr
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Do not decode relocations in RELR relocation sections when displaying them.
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.. option:: --section-mapping
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Display the section to segment mapping.
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.. option:: --stack-sizes
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Display the contents of the stack sizes section(s), i.e. pairs of function
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names and the size of their stack frames. Currently only implemented for GNU
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style output.
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.. option:: --version-info, -V
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Display version sections.
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MACH-O SPECIFIC OPTIONS
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-----------------------
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The following options are implemented only for the Mach-O file format.
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.. option:: --macho-data-in-code
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Display the Data in Code command.
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.. option:: --macho-dsymtab
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Display the Dsymtab command.
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.. option:: --macho-indirect-symbols
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Display indirect symbols.
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.. option:: --macho-linker-options
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Display the Mach-O-specific linker options.
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.. option:: --macho-segment
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Display the Segment command.
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.. option:: --macho-version-min
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Display the version min command.
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PE/COFF SPECIFIC OPTIONS
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------------------------
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The following options are implemented only for the PE/COFF file format.
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.. option:: --codeview
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Display CodeView debug information.
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.. option:: --codeview-ghash
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Enable global hashing for CodeView type stream de-duplication.
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.. option:: --codeview-merged-types
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Display the merged CodeView type stream.
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.. option:: --codeview-subsection-bytes
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Dump raw contents of CodeView debug sections and records.
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.. option:: --coff-basereloc
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Display the .reloc section.
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.. option:: --coff-debug-directory
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Display the debug directory.
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.. option:: --coff-directives
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Display the .drectve section.
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.. option:: --coff-exports
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Display the export table.
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.. option:: --coff-imports
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Display the import table.
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.. option:: --coff-load-config
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Display the load config.
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.. option:: --coff-resources
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Display the .rsrc section.
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EXIT STATUS
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-----------
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:program:`llvm-readobj` returns 0 under normal operation. It returns a non-zero
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exit code if there were any errors.
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SEE ALSO
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--------
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:manpage:`llvm-nm(1)`, :manpage:`llvm-objdump(1)`, :manpage:`llvm-readelf(1)`
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