1
llvm-nm - list LLVM bitcode and object file's symbol table
2
==========================================================
7
:program:`llvm-nm` [*options*] [*filenames...*]
12
The :program:`llvm-nm` utility lists the names of symbols from the LLVM bitcode
13
files, object files, or :program:`ar` archives containing them, named on the
14
command line. Each symbol is listed along with some simple information about
15
its provenance. If no file name is specified, or *-* is used as a file name,
16
:program:`llvm-nm` will process a file on its standard input stream.
18
:program:`llvm-nm`'s default output format is the traditional BSD :program:`nm`
19
output format. Each such output record consists of an (optional) 8-digit
20
hexadecimal address, followed by a type code character, followed by a name, for
21
each symbol. One record is printed per line; fields are separated by spaces.
22
When the address is omitted, it is replaced by 8 spaces.
24
Type code characters currently supported, and their meanings, are as follows:
28
Named object is referenced but undefined in this bitcode file
32
Common (multiple definitions link together into one def)
36
Weak reference (multiple definitions link together into zero or one definitions)
40
Local function (text) object
44
Global function (text) object
56
Something unrecognizable
58
Because LLVM bitcode files typically contain objects that are not considered to
59
have addresses until they are linked into an executable image or dynamically
60
compiled "just-in-time", :program:`llvm-nm` does not print an address for any
61
symbol in an LLVM bitcode file, even symbols which are defined in the bitcode
69
.. option:: -B (default)
71
Use BSD output format. Alias for :option:`--format=bsd`.
75
Use POSIX.2 output format. Alias for :option:`--format=posix`.
77
.. option:: --debug-syms, -a
79
Show all symbols, even debugger only.
81
.. option:: --defined-only
83
Print only symbols defined in this file (as opposed to
84
symbols which may be referenced by objects in this file, but not
85
defined in this file.)
87
.. option:: --dynamic, -D
89
Display dynamic symbols instead of normal symbols.
91
.. option:: --extern-only, -g
93
Print only symbols whose definitions are external; that is, accessible
96
.. option:: --format=format, -f format
98
Select an output format; *format* may be *sysv*, *posix*, or *bsd*. The default
103
Print a summary of command-line options and their meanings.
105
.. option:: --no-sort, -p
107
Shows symbols in order encountered.
109
.. option:: --numeric-sort, -n, -v
111
Sort symbols by address.
113
.. option:: --print-file-name, -A, -o
115
Precede each symbol with the file it came from.
117
.. option:: --print-size, -S
119
Show symbol size instead of address.
121
.. option:: --size-sort
123
Sort symbols by size.
125
.. option:: --undefined-only, -u
127
Print only symbols referenced but not defined in this file.
132
* :program:`llvm-nm` cannot demangle C++ mangled names, like GNU :program:`nm`
135
* :program:`llvm-nm` does not support the full set of arguments that GNU
141
:program:`llvm-nm` exits with an exit code of zero.
146
llvm-dis, ar(1), nm(1)