1LLVM-READOBJ(1)                      LLVM                      LLVM-READOBJ(1)
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NAME

6       llvm-readobj - LLVM Object Reader
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SYNOPSIS

9       llvm-readobj [options] [input...]
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DESCRIPTION

12       The  llvm-readobj  tool  displays low-level format-specific information
13       about one or more object files.
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15       If input is "-" or omitted, llvm-readobj  reads  from  standard  input.
16       Otherwise, it will read from the specified filenames.
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DIFFERENCES TO LLVM-READELF

19       llvm-readelf is an alias for the llvm-readobj tool with a slightly dif‐
20       ferent command-line interface and output that is GNU compatible.   Fol‐
21       lowing is a list of differences between llvm-readelf and llvm-readobj:
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23       • llvm-readelf  uses  GNU for the --elf-output-style option by default.
24         llvm-readobj uses LLVM.
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26       • llvm-readelf allows single-letter grouped flags  (e.g.   llvm-readelf
27         -SW is the same as  llvm-readelf -S -W).  llvm-readobj does not allow
28         grouping.
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30       • llvm-readelf provides -s as an alias for --symbols, for  GNU  readelf
31         compatibility,  whereas  it  is  an  alias  for  --section-headers in
32         llvm-readobj.
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34       • llvm-readobj provides -t as an  alias  for  --symbols.   llvm-readelf
35         does not.
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37       • llvm-readobj  provides  --sr,  --sd,  --st  and  --dt  as aliases for
38         --section-relocations,    --section-data,    --section-symbols    and
39         --dyn-symbols  respectively.   llvm-readelf  does  not  provide these
40         aliases, to avoid conflicting with grouped flags.
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GENERAL AND MULTI-FORMAT OPTIONS

43       These options are applicable to more than one file format, or are unre‐
44       lated to file formats.
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46       --all  Equivalent  to  specifying all the main display options relevant
47              to the file format.
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49       --addrsig
50              Display the address-significance table.
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52       --color
53              Use colors in the output for warnings and errors.
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55       --expand-relocs
56              When used with --relocations, display each relocation in an  ex‐
57              panded multi-line format.
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59       --file-headers, -h
60              Display file headers.
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62       --headers, -e
63              Equivalent  to  setting:  --file-headers, --program-headers, and
64              --sections.
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66       --help Display a summary of command line options.
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68       --help-list
69              Display an uncategorized summary of command line options.
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71       --hex-dump=<section[,section,...]>, -x
72              Display the specified section(s) as hexadecimal  bytes.  section
73              may be a section index or section name.
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75       --needed-libs
76              Display the needed libraries.
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78       --relocations, --relocs, -r
79              Display the relocation entries in the file.
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81       --sections, --section-headers, -s, -S
82              Display all sections.
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84       --section-data, --sd
85              When used with --sections, display section data for each section
86              shown. This option has no effect for GNU style output.
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88       --section-relocations, --sr
89              When used with --sections, display relocations for each  section
90              shown. This option has no effect for GNU style output.
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92       --section-symbols, --st
93              When  used  with  --sections,  display  symbols for each section
94              shown.  This option has no effect for GNU style output.
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96       --stackmap
97              Display contents of the stackmap section.
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99       --string-dump=<section[,section,...]>, -p
100              Display the specified section(s) as a list of  strings.  section
101              may be a section index or section name.
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103       --symbols, --syms, -t
104              Display the symbol table.
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106       --unwind, -u
107              Display unwind information.
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109       --version
110              Display the version of the llvm-readobj executable.
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112       @<FILE>
113              Read command-line options from response file <FILE>.
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ELF SPECIFIC OPTIONS

116       The following options are implemented only for the ELF file format.
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118       --arch-specific, -A
119              Display  architecture-specific  information,  e.g.  the  ARM at‐
120              tributes section on ARM.
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122       --demangle, -C
123              Display demangled symbol names in the output.
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125       --dependent-libraries
126              Display the dependent libraries section.
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128       --dyn-relocations
129              Display the dynamic relocation entries.
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131       --dyn-symbols, --dyn-syms, --dt
132              Display the dynamic symbol table.
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134       --dynamic-table, --dynamic, -d
135              Display the dynamic table.
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137       --elf-cg-profile
138              Display the callgraph profile section.
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140       --elf-hash-histogram, --histogram, -I
141              Display a bucket list histogram for dynamic symbol hash tables.
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143       --elf-linker-options
144              Display the linker options section.
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146       --elf-output-style=<value>
147              Format ELF information in the specified style. Valid options are
148              LLVM  and  GNU.  LLVM  output  (the  default) is an expanded and
149              structured format, whilst GNU output mimics the  equivalent  GNU
150              readelf output.
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152       --elf-section-groups, --section-groups, -g
153              Display section groups.
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155       --gnu-hash-table
156              Display the GNU hash table for dynamic symbols.
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158       --hash-symbols
159              Display the expanded hash table with dynamic symbol data.
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161       --hash-table
162              Display the hash table for dynamic symbols.
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164       --notes, -n
165              Display all notes.
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167       --program-headers, --segments, -l
168              Display the program headers.
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170       --raw-relr
171              Do  not decode relocations in RELR relocation sections when dis‐
172              playing them.
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174       --section-mapping
175              Display the section to segment mapping.
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177       --stack-sizes
178              Display the contents of the stack sizes section(s),  i.e.  pairs
179              of  function names and the size of their stack frames. Currently
180              only implemented for GNU style output.
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182       --version-info, -V
183              Display version sections.
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MACH-O SPECIFIC OPTIONS

186       The following options are implemented only for the Mach-O file format.
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188       --macho-data-in-code
189              Display the Data in Code command.
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191       --macho-dsymtab
192              Display the Dsymtab command.
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194       --macho-indirect-symbols
195              Display indirect symbols.
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197       --macho-linker-options
198              Display the Mach-O-specific linker options.
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200       --macho-segment
201              Display the Segment command.
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203       --macho-version-min
204              Display the version min command.
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PE/COFF SPECIFIC OPTIONS

207       The following options are implemented only for the PE/COFF file format.
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209       --codeview
210              Display CodeView debug information.
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212       --codeview-ghash
213              Enable global hashing for CodeView type stream de-duplication.
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215       --codeview-merged-types
216              Display the merged CodeView type stream.
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218       --codeview-subsection-bytes
219              Dump raw contents of CodeView debug sections and records.
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221       --coff-basereloc
222              Display the .reloc section.
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224       --coff-debug-directory
225              Display the debug directory.
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227       --coff-directives
228              Display the .drectve section.
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230       --coff-exports
231              Display the export table.
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233       --coff-imports
234              Display the import table.
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236       --coff-load-config
237              Display the load config.
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239       --coff-resources
240              Display the .rsrc section.
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EXIT STATUS

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

247       llvm-nm(1), llvm-objdump(1), llvm-readelf(1)
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AUTHOR

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

253       2003-2021, LLVM Project
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25810                                2021-07-22                   LLVM-READOBJ(1)