222 lines
9.3 KiB
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222 lines
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<title>GNU Binary Utilities: addr2line</title>
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<a name="addr2line"></a>
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<div class="header">
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<p>
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Next: <a href="nlmconv.html#nlmconv" accesskey="n" rel="next">nlmconv</a>, Previous: <a href="c_002b_002bfilt.html#c_002b_002bfilt" accesskey="p" rel="prev">c++filt</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Binutils-Index.html#Binutils-Index" title="Index" rel="index">Index</a>]</p>
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<a name="addr2line-1"></a>
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<h2 class="chapter">10 addr2line</h2>
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<a name="index-addr2line"></a>
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<a name="index-address-to-file-name-and-line-number"></a>
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<div class="smallexample">
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<pre class="smallexample">addr2line [<samp>-a</samp>|<samp>--addresses</samp>]
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[<samp>-b</samp> <var>bfdname</var>|<samp>--target=</samp><var>bfdname</var>]
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[<samp>-C</samp>|<samp>--demangle</samp>[=<var>style</var>]]
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[<samp>-e</samp> <var>filename</var>|<samp>--exe=</samp><var>filename</var>]
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[<samp>-f</samp>|<samp>--functions</samp>] [<samp>-s</samp>|<samp>--basename</samp>]
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[<samp>-i</samp>|<samp>--inlines</samp>]
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[<samp>-p</samp>|<samp>--pretty-print</samp>]
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[<samp>-j</samp>|<samp>--section=</samp><var>name</var>]
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[<samp>-H</samp>|<samp>--help</samp>] [<samp>-V</samp>|<samp>--version</samp>]
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[addr addr …]
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</pre></div>
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<p><code>addr2line</code> translates addresses into file names and line numbers.
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Given an address in an executable or an offset in a section of a relocatable
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object, it uses the debugging information to figure out which file name and
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line number are associated with it.
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</p>
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<p>The executable or relocatable object to use is specified with the <samp>-e</samp>
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option. The default is the file <samp>a.out</samp>. The section in the relocatable
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object to use is specified with the <samp>-j</samp> option.
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</p>
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<p><code>addr2line</code> has two modes of operation.
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</p>
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<p>In the first, hexadecimal addresses are specified on the command line,
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and <code>addr2line</code> displays the file name and line number for each
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address.
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</p>
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<p>In the second, <code>addr2line</code> reads hexadecimal addresses from
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standard input, and prints the file name and line number for each
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address on standard output. In this mode, <code>addr2line</code> may be used
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in a pipe to convert dynamically chosen addresses.
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</p>
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<p>The format of the output is ‘<samp>FILENAME:LINENO</samp>’. By default
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each input address generates one line of output.
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</p>
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<p>Two options can generate additional lines before each
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‘<samp>FILENAME:LINENO</samp>’ line (in that order).
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</p>
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<p>If the <samp>-a</samp> option is used then a line with the input address
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is displayed.
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</p>
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<p>If the <samp>-f</samp> option is used, then a line with the
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‘<samp>FUNCTIONNAME</samp>’ is displayed. This is the name of the function
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containing the address.
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</p>
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<p>One option can generate additional lines after the
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‘<samp>FILENAME:LINENO</samp>’ line.
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</p>
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<p>If the <samp>-i</samp> option is used and the code at the given address is
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present there because of inlining by the compiler then additional
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lines are displayed afterwards. One or two extra lines (if the
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<samp>-f</samp> option is used) are displayed for each inlined function.
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</p>
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<p>Alternatively if the <samp>-p</samp> option is used then each input
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address generates a single, long, output line containing the address,
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the function name, the file name and the line number. If the
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<samp>-i</samp> option has also been used then any inlined functions will
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be displayed in the same manner, but on separate lines, and prefixed
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by the text ‘<samp>(inlined by)</samp>’.
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</p>
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<p>If the file name or function name can not be determined,
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<code>addr2line</code> will print two question marks in their place. If the
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line number can not be determined, <code>addr2line</code> will print 0.
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</p>
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<p>The long and short forms of options, shown here as alternatives, are
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equivalent.
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</p>
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<dl compact="compact">
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<dt><code>-a</code></dt>
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<dt><code>--addresses</code></dt>
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<dd><p>Display the address before the function name, file and line number
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information. The address is printed with a ‘<samp>0x</samp>’ prefix to easily
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identify it.
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</p>
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</dd>
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<dt><code>-b <var>bfdname</var></code></dt>
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<dt><code>--target=<var>bfdname</var></code></dt>
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<dd><a name="index-object-code-format-4"></a>
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<p>Specify that the object-code format for the object files is
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<var>bfdname</var>.
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</p>
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</dd>
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<dt><code>-C</code></dt>
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<dt><code>--demangle[=<var>style</var>]</code></dt>
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<dd><a name="index-demangling-in-objdump-1"></a>
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<p>Decode (<em>demangle</em>) low-level symbol names into user-level names.
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Besides removing any initial underscore prepended by the system, this
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makes C++ function names readable. Different compilers have different
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mangling styles. The optional demangling style argument can be used to
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choose an appropriate demangling style for your compiler. See <a href="c_002b_002bfilt.html#c_002b_002bfilt">c++filt</a>,
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for more information on demangling.
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</p>
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</dd>
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<dt><code>-e <var>filename</var></code></dt>
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<dt><code>--exe=<var>filename</var></code></dt>
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<dd><p>Specify the name of the executable for which addresses should be
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translated. The default file is <samp>a.out</samp>.
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</p>
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</dd>
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<dt><code>-f</code></dt>
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<dt><code>--functions</code></dt>
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<dd><p>Display function names as well as file and line number information.
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</p>
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</dd>
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<dt><code>-s</code></dt>
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<dt><code>--basenames</code></dt>
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<dd><p>Display only the base of each file name.
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</p>
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</dd>
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<dt><code>-i</code></dt>
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<dt><code>--inlines</code></dt>
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<dd><p>If the address belongs to a function that was inlined, the source
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information for all enclosing scopes back to the first non-inlined
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function will also be printed. For example, if <code>main</code> inlines
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<code>callee1</code> which inlines <code>callee2</code>, and address is from
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<code>callee2</code>, the source information for <code>callee1</code> and <code>main</code>
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will also be printed.
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</p>
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</dd>
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<dt><code>-j</code></dt>
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<dt><code>--section</code></dt>
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<dd><p>Read offsets relative to the specified section instead of absolute addresses.
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</p>
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</dd>
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<dt><code>-p</code></dt>
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<dt><code>--pretty-print</code></dt>
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<dd><p>Make the output more human friendly: each location are printed on one line.
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If option <samp>-i</samp> is specified, lines for all enclosing scopes are
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prefixed with ‘<samp>(inlined by)</samp>’.
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</p></dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="nlmconv.html#nlmconv" accesskey="n" rel="next">nlmconv</a>, Previous: <a href="c_002b_002bfilt.html#c_002b_002bfilt" accesskey="p" rel="prev">c++filt</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Binutils-Index.html#Binutils-Index" title="Index" rel="index">Index</a>]</p>
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