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| <h2 class="chapter">10 addr2line</h2> |
| |
| <p><a name="index-addr2line-123"></a><a name="index-address-to-file-name-and-line-number-124"></a> |
| <!-- man title addr2line convert addresses into file names and line numbers. --> |
| |
| <pre class="smallexample"> <!-- man begin SYNOPSIS addr2line --> |
| addr2line [<samp><span class="option">-a</span></samp>|<samp><span class="option">--addresses</span></samp>] |
| [<samp><span class="option">-b</span></samp> <var>bfdname</var>|<samp><span class="option">--target=</span></samp><var>bfdname</var>] |
| [<samp><span class="option">-C</span></samp>|<samp><span class="option">--demangle</span></samp>[=<var>style</var>]] |
| [<samp><span class="option">-e</span></samp> <var>filename</var>|<samp><span class="option">--exe=</span></samp><var>filename</var>] |
| [<samp><span class="option">-f</span></samp>|<samp><span class="option">--functions</span></samp>] [<samp><span class="option">-s</span></samp>|<samp><span class="option">--basename</span></samp>] |
| [<samp><span class="option">-i</span></samp>|<samp><span class="option">--inlines</span></samp>] |
| [<samp><span class="option">-p</span></samp>|<samp><span class="option">--pretty-print</span></samp>] |
| [<samp><span class="option">-j</span></samp>|<samp><span class="option">--section=</span></samp><var>name</var>] |
| [<samp><span class="option">-H</span></samp>|<samp><span class="option">--help</span></samp>] [<samp><span class="option">-V</span></samp>|<samp><span class="option">--version</span></samp>] |
| [addr addr ...] |
| <!-- man end --> |
| </pre> |
| <!-- man begin DESCRIPTION addr2line --> |
| <p><samp><span class="command">addr2line</span></samp> translates addresses into file names and line numbers. |
| Given an address in an executable or an offset in a section of a relocatable |
| object, it uses the debugging information to figure out which file name and |
| line number are associated with it. |
| |
| <p>The executable or relocatable object to use is specified with the <samp><span class="option">-e</span></samp> |
| option. The default is the file <samp><span class="file">a.out</span></samp>. The section in the relocatable |
| object to use is specified with the <samp><span class="option">-j</span></samp> option. |
| |
| <p><samp><span class="command">addr2line</span></samp> has two modes of operation. |
| |
| <p>In the first, hexadecimal addresses are specified on the command line, |
| and <samp><span class="command">addr2line</span></samp> displays the file name and line number for each |
| address. |
| |
| <p>In the second, <samp><span class="command">addr2line</span></samp> reads hexadecimal addresses from |
| standard input, and prints the file name and line number for each |
| address on standard output. In this mode, <samp><span class="command">addr2line</span></samp> may be used |
| in a pipe to convert dynamically chosen addresses. |
| |
| <p>The format of the output is ‘<samp><span class="samp">FILENAME:LINENO</span></samp>’. The file name and |
| line number for each address is printed on a separate line. If the |
| <samp><span class="command">-f</span></samp> option is used, then each ‘<samp><span class="samp">FILENAME:LINENO</span></samp>’ line is |
| preceded by a ‘<samp><span class="samp">FUNCTIONNAME</span></samp>’ line which is the name of the function |
| containing the address. If the <samp><span class="command">-a</span></samp> option is used, then the |
| address read is first printed. |
| |
| <p>If the file name or function name can not be determined, |
| <samp><span class="command">addr2line</span></samp> will print two question marks in their place. If the |
| line number can not be determined, <samp><span class="command">addr2line</span></samp> will print 0. |
| |
| <!-- man end --> |
| <!-- man begin OPTIONS addr2line --> |
| <p>The long and short forms of options, shown here as alternatives, are |
| equivalent. |
| |
| <dl> |
| <dt><samp><span class="env">-a</span></samp><dt><samp><span class="env">--addresses</span></samp><dd>Display address before function names or file and line number |
| information. The address is printed with a ‘<samp><span class="samp">0x</span></samp>’ prefix to easily |
| identify it. |
| |
| <br><dt><samp><span class="env">-b </span><var>bfdname</var></samp><dt><samp><span class="env">--target=</span><var>bfdname</var></samp><dd><a name="index-object-code-format-125"></a>Specify that the object-code format for the object files is |
| <var>bfdname</var>. |
| |
| <br><dt><samp><span class="env">-C</span></samp><dt><samp><span class="env">--demangle[=</span><var>style</var><span class="env">]</span></samp><dd><a name="index-demangling-in-objdump-126"></a>Decode (<dfn>demangle</dfn>) low-level symbol names into user-level names. |
| Besides removing any initial underscore prepended by the system, this |
| makes C++ function names readable. Different compilers have different |
| mangling styles. The optional demangling style argument can be used to |
| choose an appropriate demangling style for your compiler. See <a href="c_002b_002bfilt.html#c_002b_002bfilt">c++filt</a>, |
| for more information on demangling. |
| |
| <br><dt><samp><span class="env">-e </span><var>filename</var></samp><dt><samp><span class="env">--exe=</span><var>filename</var></samp><dd>Specify the name of the executable for which addresses should be |
| translated. The default file is <samp><span class="file">a.out</span></samp>. |
| |
| <br><dt><samp><span class="env">-f</span></samp><dt><samp><span class="env">--functions</span></samp><dd>Display function names as well as file and line number information. |
| |
| <br><dt><samp><span class="env">-s</span></samp><dt><samp><span class="env">--basenames</span></samp><dd>Display only the base of each file name. |
| |
| <br><dt><samp><span class="env">-i</span></samp><dt><samp><span class="env">--inlines</span></samp><dd>If the address belongs to a function that was inlined, the source |
| information for all enclosing scopes back to the first non-inlined |
| function will also be printed. For example, if <code>main</code> inlines |
| <code>callee1</code> which inlines <code>callee2</code>, and address is from |
| <code>callee2</code>, the source information for <code>callee1</code> and <code>main</code> |
| will also be printed. |
| |
| <br><dt><samp><span class="env">-j</span></samp><dt><samp><span class="env">--section</span></samp><dd>Read offsets relative to the specified section instead of absolute addresses. |
| |
| <br><dt><samp><span class="env">-p</span></samp><dt><samp><span class="env">--pretty-print</span></samp><dd>Make the output more human friendly: each location are printed on one line. |
| If option <samp><span class="option">-i</span></samp> is specified, lines for all enclosing scopes are |
| prefixed with ‘<samp><span class="samp">(inlined by)</span></samp>’. |
| </dl> |
| |
| <!-- man end --> |
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| |
