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LLVM-READOBJ(1) LLVM LLVM-READOBJ(1) 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 dif- ferent command-line interface and output that is GNU compatible. Fol- lowing 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 unre- lated to file formats. --all Equivalent to specifying all the main display options relevant to the file format. --addrsig Display the address-significance table. --decompress, -z Dump decompressed section content when used with -x or -p. If the section(s) are not compressed, they are displayed as is. --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. --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. --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 attrib- utes 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 rela- tive 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 ma- chine 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. --memtag Display information about memory tagging present in the binary. This includes various dynamic entries, decoded global descriptor sections, and decoded Android-specific ELF notes. --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 dis- playing 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. SEE ALSO llvm-nm(1), llvm-objdump(1), llvm-readelf(1) AUTHOR Maintained by the LLVM Team (https://llvm.org/). COPYRIGHT 2003-2025, LLVM Project 18 2025-04-13 LLVM-READOBJ(1)
NAME | SYNOPSIS | DESCRIPTION | DIFFERENCES TO LLVM-READELF | GENERAL AND MULTI-FORMAT OPTIONS | ELF SPECIFIC OPTIONS | MACH-O SPECIFIC OPTIONS | PE/COFF SPECIFIC OPTIONS | XCOFF SPECIFIC OPTIONS | EXIT STATUS | SEE ALSO | AUTHOR | COPYRIGHT
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