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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>function::regparm</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1"><link rel="start" href="index.html" title="SystemTap Tapset Reference Manual"><link rel="up" href="ch02.html" title="Chapter 2. Context Functions"><link rel="prev" href="re44.html" title="function::registers_valid"><link rel="next" href="re46.html" title="function::remote_id"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>function::regparm</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re44.html">Prev</a> </td><th width="60%" align="center">Chapter 2. Context Functions</th><td width="20%" align="right"> <a accesskey="n" href="re46.html">Next</a></td></tr></table><hr></div><div class="refentry" lang="en"><a name="API-regparm"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>function::regparm —
Specify regparm value used to compile function
</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
regparm(n:long)
</pre></div><div class="refsect1" lang="en"><a name="idp5146384"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>n</code></em></span></dt><dd><p>
original regparm value
</p></dd></dl></div></div><div class="refsect1" lang="en"><a name="idp5149552"></a><h2>Description</h2><p>
Call this function with argument n before accessing function
arguments using the *_arg function is the function was build with the
gcc -mregparm=n option.
</p><p>
(The i386 kernel is built with \-mregparm=3, so systemtap considers
regparm(3) the default for kernel functions on that architecture.)
Only valid on i386 and x86_64 (when probing 32bit applications).
Produces an error on other architectures.
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