1LLVM-NM(1)                           LLVM                           LLVM-NM(1)
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NAME

6       llvm-nm - list LLVM bitcode and object file's symbol table
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SYNOPSIS

9       llvm-nm [options] [filenames...]
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DESCRIPTION

12       The  llvm-nm  utility  lists the names of symbols from the LLVM bitcode
13       files, object files, or ar archives containing them, named on the  com‐
14       mand  line.   Each  symbol is listed along with some simple information
15       about its provenance.  If no file name is specified, or - is used as  a
16       file name, llvm-nm will process a file on its standard input stream.
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18       llvm-nm's  default  output format is the traditional BSD nm output for‐
19       mat.  Each such output record consists of an (optional)  8-digit  hexa‐
20       decimal address, followed by a type code character, followed by a name,
21       for each symbol.  One record is printed per line; fields are  separated
22       by spaces.  When the address is omitted, it is replaced by 8 spaces.
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24       Type  code  characters  currently supported, and their meanings, are as
25       follows:
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27       U
28          Named object is referenced but undefined in this bitcode file
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30       C
31          Common (multiple definitions link together into one def)
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33       W
34          Weak reference (multiple definitions link together into zero or  one
35          definitions)
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37       t
38          Local function (text) object
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40       T
41          Global function (text) object
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43       d
44          Local data object
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46       D
47          Global data object
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49       ?
50          Something unrecognizable
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52       Because  LLVM bitcode files typically contain objects that are not con‐
53       sidered to have addresses until they are linked into an executable  im‐
54       age  or  dynamically compiled "just-in-time", llvm-nm does not print an
55       address for any symbol in an LLVM bitcode file, even symbols which  are
56       defined in the bitcode file.
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OPTIONS

59       -B (default)
60              Use BSD output format.  Alias for --format=bsd.
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62       -P     Use POSIX.2 output format.  Alias for --format=posix.
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64       --debug-syms, -a
65              Show all symbols, even debugger only.
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67       --defined-only
68              Print  only  symbols defined in this file (as opposed to symbols
69              which may be referenced by objects in this file, but not defined
70              in this file.)
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72       --dynamic, -D
73              Display dynamic symbols instead of normal symbols.
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75       --extern-only, -g
76              Print  only symbols whose definitions are external; that is, ac‐
77              cessible from other files.
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79       --no-weak, -W
80              Don't print any weak symbols in the output.
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82       --format=format, -f format
83              Select an output format; format may be sysv, posix, or bsd.  The
84              default is bsd.
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86       -help  Print a summary of command-line options and their meanings.
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88       --no-sort, -p
89              Shows symbols in order encountered.
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91       --numeric-sort, -n, -v
92              Sort symbols by address.
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94       --print-file-name, -A, -o
95              Precede each symbol with the file it came from.
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97       --print-size, -S
98              Show symbol size instead of address.
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100       --size-sort
101              Sort symbols by size.
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103       --undefined-only, -u
104              Print only symbols referenced but not defined in this file.
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106       --radix=RADIX, -t
107              Specify  the  radix  of  the symbol address(es). Values accepted
108              d(decimal), x(hexadecomal) and o(octal).
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BUGS

111          • llvm-nm does not support the full set of  arguments  that  GNU  nm
112            does.
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EXIT STATUS

115       llvm-nm exits with an exit code of zero.
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SEE ALSO

118       llvm-dis, ar(1), nm(1)
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AUTHOR

121       Maintained by The LLVM Team (http://llvm.org/).
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124       2003-2021, LLVM Project
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1297                                 2021-03-30                        LLVM-NM(1)
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