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nm(1)									 nm(1)

NAME
       nm - Name list dump of object files

SYNOPSIS
       nm  [-B	 |  -P	 | -S] [-AabdfhnoprTVvwx] [-e  | -g  | -u] [-t format]
       [-mangled_name_only] [-mangled_name_also] [file...]

       The following synopsis is in effect when the CMD_ENV environment	 vari‐
       able is set to svr4 or SVR4.  nm [-oxhvnefurplVt] [file...]

STANDARDS
       Interfaces  documented on this reference page conform to industry stan‐
       dards as follows:

       nm:  XCU5.0

       Refer to the standards(5) reference page	 for  more  information	 about
       industry standards and associated tags.

OPTIONS
       The  nm	command	 accepts  both XCU5.0 standard options and proprietary
       extensions.

       The following options control the format of the output:	Prints	output
       in  OSF format.	[Tru64 UNIX]  Prints output in Berkeley (4.3 BSD) for‐
       mat. This format produces an address or value field followed by a  let‐
       ter  showing what section the symbol is located in. The third and final
       field is the name of the symbol.	 Prints output in a  portable  (POSIX)
       format.	This  format  prints lines containing each symbol's name, type
       (single letter), value, and size.  [Tru64 UNIX]	Prints output in  Sys‐
       tem V format.

       The  following  options control the contents of the output, how sorting
       is done, and how numeric values are printed. Note that the format  that
       is  in  effect  influences the results of many of these options: Prints
       the full pathname or library name of an object on  each	line.	[Tru64
       UNIX]  Prints  full  debugging information.  [Tru64 UNIX]  For Berkeley
       (-B) format only, prints the value field in octal. Equivalent to -t  o.
       [Tru64  UNIX]  Prints  the  value field in decimal. Equivalent to -t d.
       Prints only external and static symbol information.  Prints only exter‐
       nal symbol information.	[Tru64 UNIX]  Suppresses the printing of head‐
       ers.  [Tru64 UNIX]  For Berkeley (-B)  format,  sorts  all  symbols  by
       value.  For  System  V (-S) format, sorts external symbols by name. For
       other formats, sorts all symbols by name.   Prints  numeric  values  in
       octal (equivalent to -t o).

	      [Tru64 UNIX]  For Berkeley format (-B), prepends the filename to
	      each symbol (equivalent to -A).  [Tru64 UNIX]  Prints symbols in
	      the  order  in  which  they  are	found  in  the	file.	[Tru64
	      UNIX]  Reverses the order of  a  value  or  name	sort.	[Tru64
	      UNIX]  Truncates	long  names,  inserting an asterisk (*) as the
	      last printed character.  Writes each numeric value in the speci‐
	      fied format as follows: The offset is written in decimal. Equiv‐
	      alent to -d.  The offset is written in octal. Equivalent to  -o.
	      The  offset is written in hexadecimal. Equivalent to -x.	Prints
	      only undefined symbols.  [Tru64 UNIX]  Prints  version  informa‐
	      tion  on	stderr.	  Sorts	 output by value instead of alphabeti‐
	      cally.

	      [Tru64 UNIX]  For System V format (-S), sorts  external  symbols
	      by value.	 [Tru64 UNIX]  Identifies weak symbols using an aster‐
	      isk (*). For the default, portable (-P), and Berkeley (-B)  for‐
	      mats,  the asterisk follows the symbol type letter. For System V
	      (-S), an additional column is added to the end of each line con‐
	      taining  an asterisk for weak symbols.  Prints numeric values in
	      hexadecimal.  Equivalent to -t x.

       [Tru64 UNIX]  The DEC C++ compiler encodes type	information  in	 func‐
       tion,  template,	 variable, and virtual table names to enable type-safe
       linkages.  This encoding	 is  called  “name  mangling.”	The  following
       options	can  be	 used  to  instruct the nm command to print either the
       original name (that is, the demangled name), the mangled name, or both,
       by  specifying  one  of the following options. By default, nm shows the
       demangled names only.  [Tru64  UNIX]  Prints  only  the	mangled	 name.
       [Tru64 UNIX]  Prints both the mangled and the demangled names.

DESCRIPTION
       The  nm	command	 prints	 formatted listings of the symbol and external
       sections of an object file symbol table. A file can be an object	 file,
       an  archive library, or a shared library. If you do not specify a file,
       this command assumes a.out.

       The nm tool supports four output	 formats:  OSF	(the  default)	[Tru64
       UNIX]  Berkeley	4.3 BSD (-B option) [Tru64 UNIX]  System V (-S option)
       Portable (-P option)

       The following default behaviors are the same for all four formats: Sort
       by name Show external and static symbols Output in hexadecimal

       The  only exception to these defaults is that numbers in OSF format are
       in decimal by default.

       Each format has a  distinctive  output  style  and  can	influence  the
       results	of  some  of  the  options that affect content, how sorting is
       done, and how numeric values are printed, as explained in  the  OPTIONS
       section.

   Output
       If  symbolic  information  is present in the input files, nm writes the
       following information for each file or archive member by default:  Sym‐
       bol  name Value of the symbol Symbol type Size associated with the sym‐
       bol, if applicable

       For example:

       Name			 Value	      Type	 Size

       _gp		  |  0000005368742016  |  A  |	0000000000000008  exit
       |   0000004831842368   |	 U  |  0000000000000008	 main		     |
       0000004831842816 | T | 0000000000000008

       For the default, portable (-P), and Berkeley (-B) formats, single char‐
       acters  are used as an abbreviation for symbol types. Uppercase charac‐
       ters represent external symbols, and lowercase letters represent	 local
       symbols.

       The symbol types and their abbreviations are as follows: External abso‐
       lute Local absolute External  zeroed  data  Local  zeroed  data	[Tru64
       UNIX]  Common  External	initialized data Local initialized data [Tru64
       UNIX]  Small  common  [Tru64  UNIX]  External  small  initialized  data
       [Tru64  UNIX]  Local  small initialized data [Tru64 UNIX]  Thread local
       storage common [Tru64 UNIX]  External initialized thread local  storage
       [Tru64	UNIX]  Local   initialized   thread   local   storage	[Tru64
       UNIX]  External zeroed thread local storage [Tru64 UNIX]	 Local	zeroed
       thread local storage [Tru64 UNIX]  Nil storage class, compiler internal
       usage [Tru64 UNIX]  Read-only constants [Tru64  UNIX]  Local  read-only
       constants  [Tru64  UNIX]	 External  read-only  data [Tru64 UNIX]	 Local
       read-only  data	[Tru64	UNIX]  External	 small	zeroed	 data	[Tru64
       UNIX]  Local  small zeroed data External text Local text External unde‐
       fined [Tru64 UNIX]  External small undefined [Tru64 UNIX]  Thread local
       storage undefined [Tru64 UNIX]  No storage allocated

       [Tru64  UNIX]  If  the  -a  option is specified, an expanded listing in
       System V format is written, formatted with the following	 columns:  The
       symbol or external name Value field for the symbol or external, usually
       an address or interesting debugging information	The  symbol  type  The
       symbol's	 declaration  The  symbol's  size The symbol's index field The
       symbol's storage class

SEE ALSO
       Functions:  ar(1), c89(1)

       Standards:  standards(5)

       Object File/Symbol Table Format Specification

       Programmer's Guide, Assembly Language Programmer's Guide

									 nm(1)
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