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authorpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
committerpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
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tree4357c27b561d73b0e089727c6ed659f2ceff5f47 /gnu/llvm/docs/CommandGuide/llvm-nm.rst
parentAdd support for UTF-8 DISPLAY-HINTs with octet length. For now only (diff)
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-llvm-nm - list LLVM bitcode and object file's symbol table
-==========================================================
-
-SYNOPSIS
---------
-
-:program:`llvm-nm` [*options*] [*filenames...*]
-
-DESCRIPTION
------------
-
-The :program:`llvm-nm` utility lists the names of symbols from the LLVM bitcode
-files, object files, or :program:`ar` archives containing them, named on the
-command line. Each symbol is listed along with some simple information about
-its provenance. If no file name is specified, or *-* is used as a file name,
-:program:`llvm-nm` will process a file on its standard input stream.
-
-:program:`llvm-nm`'s default output format is the traditional BSD :program:`nm`
-output format. Each such output record consists of an (optional) 8-digit
-hexadecimal address, followed by a type code character, followed by a name, for
-each symbol. One record is printed per line; fields are separated by spaces.
-When the address is omitted, it is replaced by 8 spaces.
-
-Type code characters currently supported, and their meanings, are as follows:
-
-U
-
- Named object is referenced but undefined in this bitcode file
-
-C
-
- Common (multiple definitions link together into one def)
-
-W
-
- Weak reference (multiple definitions link together into zero or one definitions)
-
-t
-
- Local function (text) object
-
-T
-
- Global function (text) object
-
-d
-
- Local data object
-
-D
-
- Global data object
-
-?
-
- Something unrecognizable
-
-Because LLVM bitcode files typically contain objects that are not considered to
-have addresses until they are linked into an executable image or dynamically
-compiled "just-in-time", :program:`llvm-nm` does not print an address for any
-symbol in an LLVM bitcode file, even symbols which are defined in the bitcode
-file.
-
-OPTIONS
--------
-
-.. program:: llvm-nm
-
-.. option:: -B (default)
-
- Use BSD output format. Alias for `--format=bsd`.
-
-.. option:: -P
-
- Use POSIX.2 output format. Alias for `--format=posix`.
-
-.. option:: --debug-syms, -a
-
- Show all symbols, even debugger only.
-
-.. option:: --defined-only
-
- Print only symbols defined in this file (as opposed to
- symbols which may be referenced by objects in this file, but not
- defined in this file.)
-
-.. option:: --dynamic, -D
-
- Display dynamic symbols instead of normal symbols.
-
-.. option:: --extern-only, -g
-
- Print only symbols whose definitions are external; that is, accessible
- from other files.
-
-.. option:: --no-weak, -W
-
- Don't print any weak symbols in the output.
-
-.. option:: --format=format, -f format
-
- Select an output format; *format* may be *sysv*, *posix*, or *bsd*. The default
- is *bsd*.
-
-.. option:: -help
-
- Print a summary of command-line options and their meanings.
-
-.. option:: --no-sort, -p
-
- Shows symbols in order encountered.
-
-.. option:: --numeric-sort, -n, -v
-
- Sort symbols by address.
-
-.. option:: --print-file-name, -A, -o
-
- Precede each symbol with the file it came from.
-
-.. option:: --print-size, -S
-
- Show symbol size instead of address.
-
-.. option:: --size-sort
-
- Sort symbols by size.
-
-.. option:: --undefined-only, -u
-
- Print only symbols referenced but not defined in this file.
-
-.. option:: --radix=RADIX, -t
-
- Specify the radix of the symbol address(es). Values accepted d(decimal),
- x(hexadecomal) and o(octal).
-
-BUGS
-----
-
- * :program:`llvm-nm` does not support the full set of arguments that GNU
- :program:`nm` does.
-
-EXIT STATUS
------------
-
-:program:`llvm-nm` exits with an exit code of zero.
-
-SEE ALSO
---------
-
-llvm-dis, ar(1), nm(1)