<html lang="en">
<head>
<title>RX-Opts - Using as</title>
<meta http-equiv="Content-Type" content="text/html">
<meta name="description" content="Using as">
<meta name="generator" content="makeinfo 4.13">
<link title="Top" rel="start" href="index.html#Top">
<link rel="up" href="RX_002dDependent.html#RX_002dDependent" title="RX-Dependent">
<link rel="next" href="RX_002dModifiers.html#RX_002dModifiers" title="RX-Modifiers">
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
<!--
This file documents the GNU Assembler "as".

Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
2000, 2001, 2002, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3
or any later version published by the Free Software Foundation;
with no Invariant Sections, with no Front-Cover Texts, and with no
Back-Cover Texts.  A copy of the license is included in the
section entitled ``GNU Free Documentation License''.

-->
<meta http-equiv="Content-Style-Type" content="text/css">
<style type="text/css"><!--
  pre.display { font-family:inherit }
  pre.format  { font-family:inherit }
  pre.smalldisplay { font-family:inherit; font-size:smaller }
  pre.smallformat  { font-family:inherit; font-size:smaller }
  pre.smallexample { font-size:smaller }
  pre.smalllisp    { font-size:smaller }
  span.sc    { font-variant:small-caps }
  span.roman { font-family:serif; font-weight:normal; } 
  span.sansserif { font-family:sans-serif; font-weight:normal; } 
--></style>
<link rel="stylesheet" type="text/css" href="../cs.css">
</head>
<body>
<div class="node">
<a name="RX-Opts"></a>
<a name="RX_002dOpts"></a>
<p>
Next:&nbsp;<a rel="next" accesskey="n" href="RX_002dModifiers.html#RX_002dModifiers">RX-Modifiers</a>,
Up:&nbsp;<a rel="up" accesskey="u" href="RX_002dDependent.html#RX_002dDependent">RX-Dependent</a>
<hr>
</div>

<h4 class="subsection">9.30.1 RX Options</h4>

<p><a name="index-options_002c-RX-1499"></a><a name="index-RX-options-1500"></a>
The Renesas RX port of <code>as</code> has a few target specfic
command line options:

     
<a name="index-g_t_0040samp_007b_002dm32bit_002ddoubles_007d-1501"></a>
<dl><dt><code>-m32bit-doubles</code><dd>This option controls the ABI and indicates to use a 32-bit float ABI. 
It has no effect on the assembled instructions, but it does influence
the behaviour of the &lsquo;<samp><span class="samp">.double</span></samp>&rsquo; pseudo-op. 
This is the default.

     <p><a name="index-g_t_0040samp_007b_002dm64bit_002ddoubles_007d-1502"></a><br><dt><code>-m64bit-doubles</code><dd>This option controls the ABI and indicates to use a 64-bit float ABI. 
It has no effect on the assembled instructions, but it does influence
the behaviour of the &lsquo;<samp><span class="samp">.double</span></samp>&rsquo; pseudo-op.

     <p><a name="index-g_t_0040samp_007b_002dmbig_002dendian_007d-1503"></a><br><dt><code>-mbig-endian</code><dd>This option controls the ABI and indicates to use a big-endian data
ABI.  It has no effect on the assembled instructions, but it does
influence the behaviour of the &lsquo;<samp><span class="samp">.short</span></samp>&rsquo;, &lsquo;<samp><span class="samp">.hword</span></samp>&rsquo;, &lsquo;<samp><span class="samp">.int</span></samp>&rsquo;,
&lsquo;<samp><span class="samp">.word</span></samp>&rsquo;, &lsquo;<samp><span class="samp">.long</span></samp>&rsquo;, &lsquo;<samp><span class="samp">.quad</span></samp>&rsquo; and &lsquo;<samp><span class="samp">.octa</span></samp>&rsquo; pseudo-ops.

     <p><a name="index-g_t_0040samp_007b_002dmlittle_002dendian_007d-1504"></a><br><dt><code>-mlittle-endian</code><dd>This option controls the ABI and indicates to use a little-endian data
ABI.  It has no effect on the assembled instructions, but it does
influence the behaviour of the &lsquo;<samp><span class="samp">.short</span></samp>&rsquo;, &lsquo;<samp><span class="samp">.hword</span></samp>&rsquo;, &lsquo;<samp><span class="samp">.int</span></samp>&rsquo;,
&lsquo;<samp><span class="samp">.word</span></samp>&rsquo;, &lsquo;<samp><span class="samp">.long</span></samp>&rsquo;, &lsquo;<samp><span class="samp">.quad</span></samp>&rsquo; and &lsquo;<samp><span class="samp">.octa</span></samp>&rsquo; pseudo-ops. 
This is the default.

     <p><a name="index-g_t_0040samp_007b_002dmuse_002dconventional_002dsection_002dnames_007d-1505"></a><br><dt><code>-muse-conventional-section-names</code><dd>This option controls the default names given to the code (.text),
initialised data (.data) and uninitialised data sections (.bss).

     <p><a name="index-g_t_0040samp_007b_002dmuse_002drenesas_002dsection_002dnames_007d-1506"></a><br><dt><code>-muse-renesas-section-names</code><dd>This option controls the default names given to the code (.P),
initialised data (.D_1) and uninitialised data sections (.B_1). 
This is the default.

     <p><a name="index-g_t_0040samp_007b_002dmsmall_002ddata_002dlimit_007d-1507"></a><br><dt><code>-msmall-data-limit</code><dd>This option tells the assembler that the small data limit feature of
the RX port of GCC is being used.  This results in the assembler
generating an undefined reference to a symbol called __gp for use by
the relocations that are needed to support the small data limit
feature.   This option is not enabled by default as it would otherwise
pollute the symbol table.

   </dl>

   </body></html>