Ubuntu Manpage: llvm-readobj - LLVM Object Reader

NAME

       llvm-readobj - LLVM Object Reader

SYNOPSIS

       llvm-readobj [options] [input…]

DESCRIPTION

       The  llvm-readobj  tool  displays  low-level format-specific information about one or more
       object files.

       If input is “-”, llvm-readobj reads from standard input. Otherwise, it will read from  the
       specified filenames.

DIFFERENCES TO LLVM-READELF

       llvm-readelf  is an alias for the llvm-readobj tool with a slightly different command-line
       interface and output that is GNU compatible.  Following is a list of  differences  between
       llvm-readelf and llvm-readobj:

       • llvm-readelf  uses  GNU  for the --elf-output-style option by default. llvm-readobj uses
         LLVM.

       • llvm-readelf allows single-letter grouped flags (e.g.  llvm-readelf -SW is the  same  as
         llvm-readelf -S -W).  llvm-readobj does not allow grouping.

       • llvm-readelf  provides  -s  as  an  alias  for --symbols, for GNU readelf compatibility,
         whereas it is an alias for --section-headers in llvm-readobj.

       • llvm-readobj provides -t as an alias for --symbols.  llvm-readelf does not.

       • llvm-readobj provides --sr, --sd, --st and --dt as  aliases  for  --section-relocations,
         --section-data, --section-symbols and --dyn-symbols respectively.  llvm-readelf does not
         provide these aliases, to avoid conflicting with grouped flags.

GENERAL AND MULTI-FORMAT OPTIONS

These options are applicable to more than one file format, or are unrelated to file
formats.

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

--addrsig
Display the address-significance table.

--expand-relocs
When used with --relocs, display each relocation in an expanded multi-line format.

--file-header, -h
Display file headers.

--headers, -e
Equivalent to setting: --file-header, --program-headers, and --sections.

--help Display a summary of command line options.

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

--needed-libs
Display the needed libraries.

--relocations, --relocs, -r
Display the relocation entries in the file.

--sections, --section-headers, -S
Display all sections.

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

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

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

--sort-symbols=<sort_key[,sort_key]>
Specify the keys to sort symbols before displaying symtab. Valid values for
sort_key are name and type.

--stackmap
Display contents of the stackmap section.

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

--string-table
Display contents of the string table.

--symbols, --syms, -s
Display the symbol table.

--unwind, -u
Display unwind information.

--version
Display the version of the llvm-readobj executable.

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

ELF SPECIFIC OPTIONS

The following options are implemented only for the ELF file format.

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

--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.

--demangle, -C
Display demangled symbol names in the output.

--dependent-libraries
Display the dependent libraries section.

--dyn-relocations
Display the dynamic relocation entries.

--dyn-symbols, --dyn-syms, --dt
Display the dynamic symbol table.

--dynamic-table, --dynamic, -d
Display the dynamic table.

--cg-profile
Display the callgraph profile section.

--histogram, -I
Display a bucket list histogram for dynamic symbol hash tables.

--elf-linker-options
Display the linker options section.

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

--section-groups, -g
Display section groups.

--gnu-hash-table
Display the GNU hash table for dynamic symbols.

--hash-symbols
Display the expanded hash table with dynamic symbol data.

--hash-table
Display the hash table for dynamic symbols.

--notes, -n
Display all notes.

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

--program-headers, --segments, -l
Display the program headers.

--raw-relr
Do not decode relocations in RELR relocation sections when displaying them.

--section-mapping
Display the section to segment mapping.

--stack-sizes
Display the contents of the stack sizes section(s), i.e. pairs of function names
and the size of their stack frames. Currently only implemented for GNU style
output.

--version-info, -V
Display version sections.

MACH-O SPECIFIC OPTIONS

       The following options are implemented only for the Mach-O file format.

       --macho-data-in-code
              Display the Data in Code command.

       --macho-dsymtab
              Display the Dsymtab command.

       --macho-indirect-symbols
              Display indirect symbols.

       --macho-linker-options
              Display the Mach-O-specific linker options.

       --macho-segment
              Display the Segment command.

       --macho-version-min
              Display the version min command.

PE/COFF SPECIFIC OPTIONS

       The following options are implemented only for the PE/COFF file format.

       --codeview
              Display CodeView debug information.

       --codeview-ghash
              Enable global hashing for CodeView type stream de-duplication.

       --codeview-merged-types
              Display the merged CodeView type stream.

       --codeview-subsection-bytes
              Dump raw contents of CodeView debug sections and records.

       --coff-basereloc
              Display the .reloc section.

       --coff-debug-directory
              Display the debug directory.

       --coff-tls-directory
              Display the TLS directory.

       --coff-directives
              Display the .drectve section.

       --coff-exports
              Display the export table.

       --coff-imports
              Display the import table.

       --coff-load-config
              Display the load config.

       --coff-resources
              Display the .rsrc section.

XCOFF SPECIFIC OPTIONS

       The following options are implemented only for the XCOFF file format.

       --auxiliary-header
              Display XCOFF Auxiliary header.

       --exception-section
              Display XCOFF exception section entries.

       --loader-section-header
              Display XCOFF loader section header.

       --loader-section-symbols
              Display symbol table of loader section.

       --loader-section-relocations
              Display relocation entries of loader section.

EXIT STATUS

       llvm-readobj returns 0 under normal operation. It returns a non-zero exit  code  if  there
       were any errors.

AUTHOR

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

COPYRIGHT

       2003-2023, LLVM Project