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barry-devel-docs-0.17-0.3.20100730git.fc14.noarch.rpm

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<h1>endian.h</h1><a href="endian_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">///</span>
<a name="l00002"></a>00002 <span class="comment"></span><span class="comment">/// \file       endian.h</span>
<a name="l00003"></a>00003 <span class="comment"></span><span class="comment">///             Endian conversion macros</span>
<a name="l00004"></a>00004 <span class="comment"></span><span class="comment">///</span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment">/*</span>
<a name="l00007"></a>00007 <span class="comment">    Copyright (C) 2006-2010, Net Direct Inc. (http://www.netdirect.ca/)</span>
<a name="l00008"></a>00008 <span class="comment"></span>
<a name="l00009"></a>00009 <span class="comment">    This program is free software; you can redistribute it and/or modify</span>
<a name="l00010"></a>00010 <span class="comment">    it under the terms of the GNU General Public License as published by</span>
<a name="l00011"></a>00011 <span class="comment">    the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00012"></a>00012 <span class="comment">    (at your option) any later version.</span>
<a name="l00013"></a>00013 <span class="comment"></span>
<a name="l00014"></a>00014 <span class="comment">    This program is distributed in the hope that it will be useful,</span>
<a name="l00015"></a>00015 <span class="comment">    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00016"></a>00016 <span class="comment">    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span>
<a name="l00017"></a>00017 <span class="comment"></span>
<a name="l00018"></a>00018 <span class="comment">    See the GNU General Public License in the COPYING file at the</span>
<a name="l00019"></a>00019 <span class="comment">    root directory of this project for more details.</span>
<a name="l00020"></a>00020 <span class="comment">*/</span>
<a name="l00021"></a>00021 
<a name="l00022"></a>00022 <span class="preprocessor">#ifndef __BARRY_ENDIAN_H__</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="preprocessor">#define __BARRY_ENDIAN_H__</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span>
<a name="l00025"></a>00025 <span class="comment">// The Blackberry is little endian in its USB data.  Fortunately,</span>
<a name="l00026"></a>00026 <span class="comment">// this makes conversion easy on the x86...</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include &quot;config.h&quot;</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include &lt;stdint.h&gt;</span>
<a name="l00029"></a>00029 
<a name="l00030"></a>00030 <span class="comment">//#include &lt;byteswap.h&gt;</span>
<a name="l00031"></a>00031 
<a name="l00032"></a>00032 <span class="comment">// The following is a byteswap.h replacement, for systems like Mac OS X.</span>
<a name="l00033"></a>00033 <span class="comment">// It was taken from a patch to the GPL software cowpatty, patch</span>
<a name="l00034"></a>00034 <span class="comment">// by user gm2net.</span>
<a name="l00035"></a>00035 <span class="comment">// http://www.netstumbler.org/showpost.php?s=79764fd1526e4653d5cb4432225da6ee&amp;p=190494&amp;postcount=29</span>
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 <span class="comment">//#warning &quot;byteswap.h is an unportable GNU extension!  Don&#39;t use!&quot;</span>
<a name="l00038"></a>00038 
<a name="l00039"></a>00039 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> bswap_16(<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> x) {
<a name="l00040"></a>00040   <span class="keywordflow">return</span> (x&gt;&gt;8) | (x&lt;&lt;8);
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042 
<a name="l00043"></a>00043 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> bswap_32(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> x) {
<a name="l00044"></a>00044   <span class="keywordflow">return</span> (bswap_16(x&amp;0xffff)&lt;&lt;16) | (bswap_16(x&gt;&gt;16));
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046 
<a name="l00047"></a>00047 <span class="keyword">static</span> <span class="keyword">inline</span> uint64_t bswap_64(uint64_t x) {
<a name="l00048"></a>00048   <span class="keywordflow">return</span> (((uint64_t)bswap_32(x&amp;0xffffffffull))&lt;&lt;32) | (bswap_32(x&gt;&gt;32));
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050 
<a name="l00051"></a>00051 <span class="preprocessor">#ifndef WORDS_BIGENDIAN</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span>
<a name="l00053"></a>00053 <span class="comment">// For when Blackberry needs little endian (most of the time)</span>
<a name="l00054"></a>00054 <span class="preprocessor">#define btohs(x) x                      // for uint16_t</span>
<a name="l00055"></a>00055 <span class="preprocessor"></span><span class="preprocessor">#define btohl(x) x                      // for uint32_t</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span><span class="preprocessor">#define btohll(x) x                     // for uint64_t</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span><span class="preprocessor">#define htobs(x) x                      // for uint16_t</span>
<a name="l00058"></a>00058 <span class="preprocessor"></span><span class="preprocessor">#define htobl(x) x                      // for uint32_t</span>
<a name="l00059"></a>00059 <span class="preprocessor"></span><span class="preprocessor">#define htobll(x) x                     // for uint64_t</span>
<a name="l00060"></a>00060 <span class="preprocessor"></span>
<a name="l00061"></a>00061 <span class="comment">// For when Blackberry needs big endian (often in JavaLoader protocol)</span>
<a name="l00062"></a>00062 <span class="preprocessor">#define be_btohs(x) bswap_16(x)         // for uint16_t</span>
<a name="l00063"></a>00063 <span class="preprocessor"></span><span class="preprocessor">#define be_btohl(x) bswap_32(x)         // for uint32_t</span>
<a name="l00064"></a>00064 <span class="preprocessor"></span><span class="preprocessor">#define be_btohll(x) bswap_64(x)        // for uint64_t</span>
<a name="l00065"></a>00065 <span class="preprocessor"></span><span class="preprocessor">#define be_htobs(x) bswap_16(x)         // for uint16_t</span>
<a name="l00066"></a>00066 <span class="preprocessor"></span><span class="preprocessor">#define be_htobl(x) bswap_32(x)         // for uint32_t</span>
<a name="l00067"></a>00067 <span class="preprocessor"></span><span class="preprocessor">#define be_htobll(x) bswap_64(x)        // for uint64_t</span>
<a name="l00068"></a>00068 <span class="preprocessor"></span>
<a name="l00069"></a>00069 <span class="preprocessor">#else</span>
<a name="l00070"></a>00070 <span class="preprocessor"></span>
<a name="l00071"></a>00071 <span class="comment">// For when Blackberry needs little endian (most of the time)</span>
<a name="l00072"></a>00072 <span class="preprocessor">#define btohs(x) bswap_16(x)            // for uint16_t</span>
<a name="l00073"></a>00073 <span class="preprocessor"></span><span class="preprocessor">#define btohl(x) bswap_32(x)            // for uint32_t</span>
<a name="l00074"></a>00074 <span class="preprocessor"></span><span class="preprocessor">#define btohll(x) bswap_64(x)           // for uint64_t</span>
<a name="l00075"></a>00075 <span class="preprocessor"></span><span class="preprocessor">#define htobs(x) bswap_16(x)            // for uint16_t</span>
<a name="l00076"></a>00076 <span class="preprocessor"></span><span class="preprocessor">#define htobl(x) bswap_32(x)            // for uint32_t</span>
<a name="l00077"></a>00077 <span class="preprocessor"></span><span class="preprocessor">#define htobll(x) bswap_64(x)           // for uint64_t</span>
<a name="l00078"></a>00078 <span class="preprocessor"></span>
<a name="l00079"></a>00079 <span class="comment">// For when Blackberry needs big endian (often in JavaLoader protocol)</span>
<a name="l00080"></a>00080 <span class="preprocessor">#define be_btohs(x) x                   // for uint16_t</span>
<a name="l00081"></a>00081 <span class="preprocessor"></span><span class="preprocessor">#define be_btohl(x) x                   // for uint32_t</span>
<a name="l00082"></a>00082 <span class="preprocessor"></span><span class="preprocessor">#define be_btohll(x) x                  // for uint64_t</span>
<a name="l00083"></a>00083 <span class="preprocessor"></span><span class="preprocessor">#define be_htobs(x) x                   // for uint16_t</span>
<a name="l00084"></a>00084 <span class="preprocessor"></span><span class="preprocessor">#define be_htobl(x) x                   // for uint32_t</span>
<a name="l00085"></a>00085 <span class="preprocessor"></span><span class="preprocessor">#define be_htobll(x) x                  // for uint64_t</span>
<a name="l00086"></a>00086 <span class="preprocessor"></span>
<a name="l00087"></a>00087 <span class="preprocessor">#endif</span>
<a name="l00088"></a>00088 <span class="preprocessor"></span>
<a name="l00089"></a>00089 <span class="preprocessor">#endif</span>
<a name="l00090"></a>00090 <span class="preprocessor"></span>
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