nm(1)							      General Commands Manual							     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 variable is set to svr4 or SVR4.  nm [-oxhvnefurplVt] [file...]

STANDARDS

       Interfaces documented on this reference page conform to industry standards 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)
       format. This format produces an address or value field followed by a letter 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 System 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 external symbol information.  [Tru64 UNIX]	Suppresses the printing of headers.  [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 specified format as  follows:
	      The  offset  is  written	in decimal. Equivalent 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 information on stderr.  Sorts output by
	      value instead of alphabetically.

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

       [Tru64 UNIX]  The DEC C++ compiler encodes type information in function, 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 origi-
       nal 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 symbol, 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 characters are used as an abbreviation for symbol types.  Uppercase char-
       acters represent external symbols, and lowercase letters represent local symbols.

       The  symbol  types  and	their abbreviations are as follows: External absolute 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 stor-
       age [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 undefined [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)

       Programmer's Guide, Assembly Language Programmer's Guide

																	     nm(1)