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 "-", llvm-readobj reads from standard input. Otherwise,  it
16       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       --expand-relocs
53              When used with --relocs, display each relocation in an  expanded
54              multi-line format.
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56       --file-header, -h
57              Display file headers.
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59       --headers, -e
60              Equivalent  to  setting:  --file-header,  --program-headers, and
61              --sections.
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63       --help Display a summary of command line options.
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65       --hex-dump=<section[,section,...]>, -x
66              Display the specified section(s) as hexadecimal  bytes.  section
67              may be a section index or section name.
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69       --needed-libs
70              Display the needed libraries.
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72       --relocations, --relocs, -r
73              Display the relocation entries in the file.
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75       --sections, --section-headers, -S
76              Display all sections.
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78       --section-data, --sd
79              When used with --sections, display section data for each section
80              shown. This option has no effect for GNU style output.
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82       --section-relocations, --sr
83              When used with --sections, display relocations for each  section
84              shown. This option has no effect for GNU style output.
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86       --section-symbols, --st
87              When  used  with  --sections,  display  symbols for each section
88              shown.  This option has no effect for GNU style output.
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90       --stackmap
91              Display contents of the stackmap section.
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93       --string-dump=<section[,section,...]>, -p
94              Display the specified section(s) as a list of  strings.  section
95              may be a section index or section name.
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97       --string-table
98              Display contents of the string table.
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100       --symbols, --syms, -s
101              Display the symbol table.
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103       --unwind, -u
104              Display unwind information.
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106       --version
107              Display the version of the llvm-readobj executable.
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109       @<FILE>
110              Read command-line options from response file <FILE>.
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ELF SPECIFIC OPTIONS

113       The following options are implemented only for the ELF file format.
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115       --arch-specific, -A
116              Display  architecture-specific  information,  e.g.  the  ARM at‐
117              tributes section on ARM.
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119       --bb-addr-map
120              Display the contents of the basic block address map  section(s),
121              which contain the address of each function, along with the rela‐
122              tive offset of each basic block.
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124       --demangle, -C
125              Display demangled symbol names in the output.
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127       --dependent-libraries
128              Display the dependent libraries section.
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130       --dyn-relocations
131              Display the dynamic relocation entries.
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133       --dyn-symbols, --dyn-syms, --dt
134              Display the dynamic symbol table.
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136       --dynamic-table, --dynamic, -d
137              Display the dynamic table.
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139       --cg-profile
140              Display the callgraph profile section.
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142       --histogram, -I
143              Display a bucket list histogram for dynamic symbol hash tables.
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145       --elf-linker-options
146              Display the linker options section.
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148       --elf-output-style=<value>
149              Format ELF information in the specified style. Valid options are
150              LLVM  and  GNU.  LLVM  output  (the  default) is an expanded and
151              structured format, whilst GNU output mimics the  equivalent  GNU
152              readelf output.
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154       --section-groups, -g
155              Display section groups.
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157       --gnu-hash-table
158              Display the GNU hash table for dynamic symbols.
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160       --hash-symbols
161              Display the expanded hash table with dynamic symbol data.
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163       --hash-table
164              Display the hash table for dynamic symbols.
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166       --notes, -n
167              Display all notes.
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169       --program-headers, --segments, -l
170              Display the program headers.
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172       --raw-relr
173              Do  not decode relocations in RELR relocation sections when dis‐
174              playing them.
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176       --section-mapping
177              Display the section to segment mapping.
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179       --stack-sizes
180              Display the contents of the stack sizes section(s),  i.e.  pairs
181              of  function names and the size of their stack frames. Currently
182              only implemented for GNU style output.
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184       --version-info, -V
185              Display version sections.
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MACH-O SPECIFIC OPTIONS

188       The following options are implemented only for the Mach-O file format.
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190       --macho-data-in-code
191              Display the Data in Code command.
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193       --macho-dsymtab
194              Display the Dsymtab command.
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196       --macho-indirect-symbols
197              Display indirect symbols.
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199       --macho-linker-options
200              Display the Mach-O-specific linker options.
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202       --macho-segment
203              Display the Segment command.
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205       --macho-version-min
206              Display the version min command.
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PE/COFF SPECIFIC OPTIONS

209       The following options are implemented only for the PE/COFF file format.
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211       --codeview
212              Display CodeView debug information.
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214       --codeview-ghash
215              Enable global hashing for CodeView type stream de-duplication.
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217       --codeview-merged-types
218              Display the merged CodeView type stream.
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220       --codeview-subsection-bytes
221              Dump raw contents of CodeView debug sections and records.
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223       --coff-basereloc
224              Display the .reloc section.
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226       --coff-debug-directory
227              Display the debug directory.
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229       --coff-tls-directory
230              Display the TLS directory.
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232       --coff-directives
233              Display the .drectve section.
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235       --coff-exports
236              Display the export table.
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238       --coff-imports
239              Display the import table.
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241       --coff-load-config
242              Display the load config.
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244       --coff-resources
245              Display the .rsrc section.
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EXIT STATUS

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

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

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

258       2003-2021, LLVM Project
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26313                                2021-10-08                   LLVM-READOBJ(1)