315 lines
9.3 KiB
HTML
315 lines
9.3 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of ADDR2LINE</TITLE>
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</HEAD><BODY>
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<H1>ADDR2LINE</H1>
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Section: GNU Development Tools (1)<BR>Updated: 2021-01-21<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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addr2line - convert addresses into file names and line numbers
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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addr2line [<B>-a</B>|<B>--addresses</B>]
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<BR> [<B>-b</B> <I>bfdname</I>|<B>--target=</B><I>bfdname</I>]
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<BR> [<B>-C</B>|<B>--demangle</B>[=<I>style</I>]]
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<BR> [<B>-r</B>|<B>--no-recurse-limit</B>]
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<BR> [<B>-R</B>|<B>--recurse-limit</B>]
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<BR> [<B>-e</B> <I>filename</I>|<B>--exe=</B><I>filename</I>]
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<BR> [<B>-f</B>|<B>--functions</B>] [<B>-s</B>|<B>--basename</B>]
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<BR> [<B>-i</B>|<B>--inlines</B>]
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<BR> [<B>-p</B>|<B>--pretty-print</B>]
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<BR> [<B>-j</B>|<B>--section=</B><I>name</I>]
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<BR> [<B>-H</B>|<B>--help</B>] [<B>-V</B>|<B>--version</B>]
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<BR> [addr addr ...]
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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<B>addr2line</B> 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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The executable or relocatable object to use is specified with the <B>-e</B>
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option. The default is the file <I>a.out</I>. The section in the relocatable
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object to use is specified with the <B>-j</B> option.
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<P>
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<B>addr2line</B> has two modes of operation.
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<P>
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In the first, hexadecimal addresses are specified on the command line,
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and <B>addr2line</B> displays the file name and line number for each
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address.
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<P>
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In the second, <B>addr2line</B> 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, <B>addr2line</B> may be used
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in a pipe to convert dynamically chosen addresses.
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<P>
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The format of the output is <B></B><FONT SIZE="-1"><B>FILENAME:LINENO</B></FONT><B></B>. By default
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each input address generates one line of output.
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<P>
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Two options can generate additional lines before each
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<B></B><FONT SIZE="-1"><B>FILENAME:LINENO</B></FONT><B></B> line (in that order).
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<P>
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If the <B>-a</B> 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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If the <B>-f</B> option is used, then a line with the
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<B></B><FONT SIZE="-1"><B>FUNCTIONNAME</B></FONT><B></B> 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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One option can generate additional lines after the
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<B></B><FONT SIZE="-1"><B>FILENAME:LINENO</B></FONT><B></B> line.
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<P>
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If the <B>-i</B> 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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<B>-f</B> option is used) are displayed for each inlined function.
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<P>
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Alternatively if the <B>-p</B> 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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<B>-i</B> 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 <B>(inlined by)</B>.
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<P>
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If the file name or function name can not be determined,
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<B>addr2line</B> will print two question marks in their place. If the
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line number can not be determined, <B>addr2line</B> will print 0.
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<A NAME="lbAE"> </A>
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<H2>OPTIONS</H2>
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The long and short forms of options, shown here as alternatives, are
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equivalent.
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<DL COMPACT>
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<DT id="1"><B>-a</B><DD>
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<DT id="2"><B>--addresses</B><DD>
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Display the address before the function name, file and line number
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information. The address is printed with a <B>0x</B> prefix to easily
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identify it.
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<DT id="3"><B>-b</B> <I>bfdname</I><DD>
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<DT id="4"><B>--target=</B><I>bfdname</I><DD>
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Specify that the object-code format for the object files is
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<I>bfdname</I>.
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<DT id="5"><B>-C</B><DD>
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<DT id="6"><B>--demangle[=</B><I>style</I><B>]</B><DD>
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Decode (<I>demangle</I>) 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<FONT SIZE="-2">++</FONT> 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.
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<DT id="7"><B>-e</B> <I>filename</I><DD>
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<DT id="8"><B>--exe=</B><I>filename</I><DD>
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Specify the name of the executable for which addresses should be
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translated. The default file is <I>a.out</I>.
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<DT id="9"><B>-f</B><DD>
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<DT id="10"><B>--functions</B><DD>
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Display function names as well as file and line number information.
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<DT id="11"><B>-s</B><DD>
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<DT id="12"><B>--basenames</B><DD>
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Display only the base of each file name.
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<DT id="13"><B>-i</B><DD>
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<DT id="14"><B>--inlines</B><DD>
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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 <TT>"main"</TT> inlines
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<TT>"callee1"</TT> which inlines <TT>"callee2"</TT>, and address is from
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<TT>"callee2"</TT>, the source information for <TT>"callee1"</TT> and <TT>"main"</TT>
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will also be printed.
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<DT id="15"><B>-j</B><DD>
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<DT id="16"><B>--section</B><DD>
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Read offsets relative to the specified section instead of absolute addresses.
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<DT id="17"><B>-p</B><DD>
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<DT id="18"><B>--pretty-print</B><DD>
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Make the output more human friendly: each location are printed on one line.
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If option <B>-i</B> is specified, lines for all enclosing scopes are
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prefixed with <B>(inlined by)</B>.
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<DT id="19"><B>-r</B><DD>
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<DT id="20"><B>-R</B><DD>
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<DT id="21"><B>--recurse-limit</B><DD>
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<DT id="22"><B>--no-recurse-limit</B><DD>
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<DT id="23"><B>--recursion-limit</B><DD>
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<DT id="24"><B>--no-recursion-limit</B><DD>
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Enables or disables a limit on the amount of recursion performed
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whilst demangling strings. Since the name mangling formats allow for
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an inifinite level of recursion it is possible to create strings whose
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decoding will exhaust the amount of stack space available on the host
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machine, triggering a memory fault. The limit tries to prevent this
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from happening by restricting recursion to 2048 levels of nesting.
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<P>
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The default is for this limit to be enabled, but disabling it may be
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necessary in order to demangle truly complicated names. Note however
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that if the recursion limit is disabled then stack exhaustion is
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possible and any bug reports about such an event will be rejected.
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<P>
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The <B>-r</B> option is a synonym for the
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<B>--no-recurse-limit</B> option. The <B>-R</B> option is a
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synonym for the <B>--recurse-limit</B> option.
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<P>
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Note this option is only effective if the <B>-C</B> or
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<B>--demangle</B> option has been enabled.
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<DT id="25"><B>@</B><I>file</I><DD>
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Read command-line options from <I>file</I>. The options read are
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inserted in place of the original @<I>file</I> option. If <I>file</I>
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does not exist, or cannot be read, then the option will be treated
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literally, and not removed.
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<P>
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Options in <I>file</I> are separated by whitespace. A whitespace
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character may be included in an option by surrounding the entire
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option in either single or double quotes. Any character (including a
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backslash) may be included by prefixing the character to be included
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with a backslash. The <I>file</I> may itself contain additional
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@<I>file</I> options; any such options will be processed recursively.
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</DL>
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<A NAME="lbAF"> </A>
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<H2>SEE ALSO</H2>
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Info entries for <I>binutils</I>.
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<A NAME="lbAG"> </A>
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<H2>COPYRIGHT</H2>
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Copyright (c) 1991-2020 Free Software Foundation, Inc.
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<P>
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the <FONT SIZE="-1">GNU</FONT> Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled ``<FONT SIZE="-1">GNU</FONT> Free Documentation License''.
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="26"><A HREF="#lbAB">NAME</A><DD>
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<DT id="27"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="28"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="29"><A HREF="#lbAE">OPTIONS</A><DD>
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<DT id="30"><A HREF="#lbAF">SEE ALSO</A><DD>
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<DT id="31"><A HREF="#lbAG">COPYRIGHT</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:06 GMT, March 31, 2021
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</BODY>
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</HTML>
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