begriffs open source - cmsis/blob - main/Core_A/group__CMSIS__CPSR.html

   1 <!-- HTML header for doxygen 1.9.6-->
   2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
   3 <html xmlns="http://www.w3.org/1999/xhtml" lang="en-US">
   4 <head>
   5 <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
   6 <meta http-equiv="X-UA-Compatible" content="IE=11"/>
   7 <meta name="viewport" content="width=device-width, initial-scale=1"/>
   8 <title>CMSIS-Core (Cortex-A): Current Program Status Register (CPSR)</title>
   9 <link href="doxygen.css" rel="stylesheet" type="text/css" />
  10 <script type="text/javascript" src="jquery.js"></script>
  11 <script type="text/javascript" src="dynsections.js"></script>
  12 <script type="text/javascript" src="tabs.js"></script>
  13 <script type="text/javascript" src="footer.js"></script>
  14 <script type="text/javascript" src="navtree.js"></script>
  15 <link href="navtree.css" rel="stylesheet" type="text/css"/>
  16 <script type="text/javascript" src="resize.js"></script>
  17 <script type="text/javascript" src="navtreedata.js"></script>
  18 <script type="text/javascript" src="navtree.js"></script>
  19 <link href="search/search.css" rel="stylesheet" type="text/css"/>
  20 <script type="text/javascript" src="search/searchdata.js"></script>
  21 <script type="text/javascript" src="search/search.js"></script>
  22 <script type="text/javascript">
  23 /* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
  24   $(document).ready(function() { init_search(); });
  25 /* @license-end */
  26 </script>
  27 <script type="text/javascript" src="darkmode_toggle.js"></script>
  28 <link href="extra_stylesheet.css" rel="stylesheet" type="text/css"/>
  29 <link href="extra_navtree.css" rel="stylesheet" type="text/css"/>
  30 <link href="extra_search.css" rel="stylesheet" type="text/css"/>
  31 <link href="extra_tabs.css" rel="stylesheet" type="text/css"/>
  32 <link href="version.css" rel="stylesheet" type="text/css"/>
  33 <script type="text/javascript" src="../../version.js"></script>
  34 </head>
  35 <body>
  36 <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
  37 <div id="titlearea">
  38 <table cellspacing="0" cellpadding="0">
  39  <tbody>
  40  <tr style="height: 55px;">
  41   <td id="projectlogo" style="padding: 1.5em;"><img alt="Logo" src="cmsis_logo_white_small.png"/></td>
  42   <td style="padding-left: 1em; padding-bottom: 1em;padding-top: 1em;">
  43    <div id="projectname">CMSIS-Core (Cortex-A)
  44    &#160;<span id="projectnumber"><script type="text/javascript">
  45      <!--
  46      writeHeader.call(this);
  47      writeVersionDropdown.call(this, "CMSIS-Core (Cortex-A)");
  48      //-->
  49     </script>
  50    </span>
  51    </div>
  52    <div id="projectbrief">CMSIS-Core support for Cortex-A processor-based devices</div>
  53   </td>
  54    <td>        <div id="MSearchBox" class="MSearchBoxInactive">
  55         <span class="left">
  56           <span id="MSearchSelect"                onmouseover="return searchBox.OnSearchSelectShow()"                onmouseout="return searchBox.OnSearchSelectHide()">&#160;</span>
  57           <input type="text" id="MSearchField" value="" placeholder="Search" accesskey="S"
  58                onfocus="searchBox.OnSearchFieldFocus(true)"
  59                onblur="searchBox.OnSearchFieldFocus(false)"
  60                onkeyup="searchBox.OnSearchFieldChange(event)"/>
  61           </span><span class="right">
  62             <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.svg" alt=""/></a>
  63           </span>
  64         </div>
  65 </td>
  66   <!--END !PROJECT_NAME-->
  67  </tr>
  68  </tbody>
  69 </table>
  70 </div>
  71 <!-- end header part -->
  72 <div id="CMSISnav" class="tabs1">
  73   <ul class="tablist">
  74     <script type="text/javascript">
  75       writeComponentTabs.call(this);
  76     </script>
  77   </ul>
  78 </div>
  79 <script type="text/javascript">
  80   writeSubComponentTabs.call(this);
  81 </script>
  82 <!-- Generated by Doxygen 1.9.6 -->
  83 <script type="text/javascript">
  84 /* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
  85 var searchBox = new SearchBox("searchBox", "search/",'.html');
  86 /* @license-end */
  87 </script>
  88 </div><!-- top -->
  89 <div id="side-nav" class="ui-resizable side-nav-resizable">
  90   <div id="nav-tree">
  91     <div id="nav-tree-contents">
  92       <div id="nav-sync" class="sync"></div>
  93     </div>
  94   </div>
  95   <div id="splitbar" style="-moz-user-select:none;"
  96        class="ui-resizable-handle">
  97   </div>
  98 </div>
  99 <script type="text/javascript">
 100 /* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
 101 $(document).ready(function(){initNavTree('group__CMSIS__CPSR.html',''); initResizable(); });
 102 /* @license-end */
 103 </script>
 104 <div id="doc-content">
 105 <!-- window showing the filter options -->
 106 <div id="MSearchSelectWindow"
 107      onmouseover="return searchBox.OnSearchSelectShow()"
 108      onmouseout="return searchBox.OnSearchSelectHide()"
 109      onkeydown="return searchBox.OnSearchSelectKey(event)">
 110 </div>
 111
 112 <!-- iframe showing the search results (closed by default) -->
 113 <div id="MSearchResultsWindow">
 114 <div id="MSearchResults">
 115 <div class="SRPage">
 116 <div id="SRIndex">
 117 <div id="SRResults"></div>
 118 <div class="SRStatus" id="Loading">Loading...</div>
 119 <div class="SRStatus" id="Searching">Searching...</div>
 120 <div class="SRStatus" id="NoMatches">No Matches</div>
 121 </div>
 122 </div>
 123 </div>
 124 </div>
 125
 126 <div class="header">
 127   <div class="summary">
 128 <a href="#groups">Content</a> &#124;
 129 <a href="#nested-classes">Data Structures</a> &#124;
 130 <a href="#func-members">Functions</a>  </div>
 131   <div class="headertitle"><div class="title">Current Program Status Register (CPSR)<div class="ingroups"><a class="el" href="group__CMSIS__core__register.html">Core Register Access</a></div></div></div>
 132 </div><!--header-->
 133 <div class="contents">
 134
 135 <p>The Current Program Status Register (CPSR) holds processor status and control information.
 136 <a href="#details">More...</a></p>
 137 <table class="memberdecls">
 138 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="groups" name="groups"></a>
 139 Content</h2></td></tr>
 140 <tr class="memitem:group__CMSIS__CPSR__BITS"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__CPSR__BITS.html">CPSR Bits</a></td></tr>
 141 <tr class="memdesc:group__CMSIS__CPSR__BITS"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bit position and mask macros. <br /></td></tr>
 142 <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
 143 <tr class="memitem:group__CMSIS__CPSR__M"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__CPSR__M.html">CPSR M field values</a></td></tr>
 144 <tr class="memdesc:group__CMSIS__CPSR__M"><td class="mdescLeft">&#160;</td><td class="mdescRight">Valid values for CPSR M field. <br /></td></tr>
 145 <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
 146 </table><table class="memberdecls">
 147 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="nested-classes" name="nested-classes"></a>
 148 Data Structures</h2></td></tr>
 149 <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="unionCPSR__Type.html">CPSR_Type</a></td></tr>
 150 <tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bit field declaration for CPSR layout.  <a href="unionCPSR__Type.html#details">More...</a><br /></td></tr>
 151 <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
 152 </table><table class="memberdecls">
 153 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
 154 Functions</h2></td></tr>
 155 <tr class="memitem:gaa4bddbd2091b8fb234ae43d290e69e78"><td class="memItemLeft" align="right" valign="top"><a class="el" href="cmsis__armclang__a_8h.html#ab904513442afdf77d4f8c74f23cbb040">__STATIC_FORCEINLINE</a> uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__CPSR.html#gaa4bddbd2091b8fb234ae43d290e69e78">__get_CPSR</a> (void)</td></tr>
 156 <tr class="memdesc:gaa4bddbd2091b8fb234ae43d290e69e78"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get CPSR Register.  <br /></td></tr>
 157 <tr class="separator:gaa4bddbd2091b8fb234ae43d290e69e78"><td class="memSeparator" colspan="2">&#160;</td></tr>
 158 <tr class="memitem:ga48f0cfea7413b74bd90986762383c1cd"><td class="memItemLeft" align="right" valign="top"><a class="el" href="cmsis__armclang__a_8h.html#ab904513442afdf77d4f8c74f23cbb040">__STATIC_FORCEINLINE</a> void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__CPSR.html#ga48f0cfea7413b74bd90986762383c1cd">__set_CPSR</a> (uint32_t cpsr)</td></tr>
 159 <tr class="memdesc:ga48f0cfea7413b74bd90986762383c1cd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set CPSR Register.  <br /></td></tr>
 160 <tr class="separator:ga48f0cfea7413b74bd90986762383c1cd"><td class="memSeparator" colspan="2">&#160;</td></tr>
 161 </table>
 162 <a name="details" id="details"></a><h2 class="groupheader">Description</h2>
 163 <p>The Current Program Status Register (CPSR) holds processor status and control information. </p>
 164 <p>The individual register bits have the following meaning:</p>
 165 <table class="markdownTable">
 166 <tr class="markdownTableHead">
 167 <th class="markdownTableHeadLeft">Bits   </th><th class="markdownTableHeadLeft">Name   </th><th class="markdownTableHeadLeft">Function    </th></tr>
 168 <tr class="markdownTableRowOdd">
 169 <td class="markdownTableBodyLeft">[31]   </td><td class="markdownTableBodyLeft">N   </td><td class="markdownTableBodyLeft">Negative condition code flag    </td></tr>
 170 <tr class="markdownTableRowEven">
 171 <td class="markdownTableBodyLeft">[30]   </td><td class="markdownTableBodyLeft">Z   </td><td class="markdownTableBodyLeft">Zero condition code flag    </td></tr>
 172 <tr class="markdownTableRowOdd">
 173 <td class="markdownTableBodyLeft">[29]   </td><td class="markdownTableBodyLeft">C   </td><td class="markdownTableBodyLeft">Carry condition code flag    </td></tr>
 174 <tr class="markdownTableRowEven">
 175 <td class="markdownTableBodyLeft">[28]   </td><td class="markdownTableBodyLeft">V   </td><td class="markdownTableBodyLeft">Overflow condition code flag    </td></tr>
 176 <tr class="markdownTableRowOdd">
 177 <td class="markdownTableBodyLeft">[27]   </td><td class="markdownTableBodyLeft">Q   </td><td class="markdownTableBodyLeft">Cumulative saturation bit    </td></tr>
 178 <tr class="markdownTableRowEven">
 179 <td class="markdownTableBodyLeft">[26:25]   </td><td class="markdownTableBodyLeft">IT[1:0]   </td><td class="markdownTableBodyLeft">If-Then execution state bits for the Thumb IT (If-Then) instruction    </td></tr>
 180 <tr class="markdownTableRowOdd">
 181 <td class="markdownTableBodyLeft">[24]   </td><td class="markdownTableBodyLeft">J   </td><td class="markdownTableBodyLeft">Jazelle bit    </td></tr>
 182 <tr class="markdownTableRowEven">
 183 <td class="markdownTableBodyLeft">[19:16]   </td><td class="markdownTableBodyLeft">GE   </td><td class="markdownTableBodyLeft">Greater than or Equal flags    </td></tr>
 184 <tr class="markdownTableRowOdd">
 185 <td class="markdownTableBodyLeft">[15:10]   </td><td class="markdownTableBodyLeft">IT[7:2]   </td><td class="markdownTableBodyLeft">If-Then execution state bits for the Thumb IT (If-Then) instruction    </td></tr>
 186 <tr class="markdownTableRowEven">
 187 <td class="markdownTableBodyLeft">[9]   </td><td class="markdownTableBodyLeft">E   </td><td class="markdownTableBodyLeft">Endianness execution state bit: 0 - Little-endian, 1 - Big-endian    </td></tr>
 188 <tr class="markdownTableRowOdd">
 189 <td class="markdownTableBodyLeft">[8]   </td><td class="markdownTableBodyLeft">A   </td><td class="markdownTableBodyLeft">Asynchronous abort mask bit    </td></tr>
 190 <tr class="markdownTableRowEven">
 191 <td class="markdownTableBodyLeft">[7]   </td><td class="markdownTableBodyLeft">I   </td><td class="markdownTableBodyLeft">IRQ mask bit    </td></tr>
 192 <tr class="markdownTableRowOdd">
 193 <td class="markdownTableBodyLeft">[6]   </td><td class="markdownTableBodyLeft">F   </td><td class="markdownTableBodyLeft">FIRQ mask bit    </td></tr>
 194 <tr class="markdownTableRowEven">
 195 <td class="markdownTableBodyLeft">[5]   </td><td class="markdownTableBodyLeft">T   </td><td class="markdownTableBodyLeft">Thumb execution state bit    </td></tr>
 196 <tr class="markdownTableRowOdd">
 197 <td class="markdownTableBodyLeft">[4:0]   </td><td class="markdownTableBodyLeft">M   </td><td class="markdownTableBodyLeft"><a class="el" href="group__CMSIS__CPSR__M.html">Mode field</a>   </td></tr>
 198 </table>
 199 <p>Consider using <a class="el" href="group__CMSIS__CPSR.html#gaa4bddbd2091b8fb234ae43d290e69e78">__get_CPSR</a> and <a class="el" href="group__CMSIS__CPSR.html#ga48f0cfea7413b74bd90986762383c1cd">__set_CPSR</a> for accessing this register. </p>
 200 <h2 class="groupheader">Function Documentation</h2>
 201 <a id="gaa4bddbd2091b8fb234ae43d290e69e78" name="gaa4bddbd2091b8fb234ae43d290e69e78"></a>
 202 <h2 class="memtitle"><span class="permalink"><a href="#gaa4bddbd2091b8fb234ae43d290e69e78">&#9670;&#160;</a></span>__get_CPSR()</h2>
 203
 204 <div class="memitem">
 205 <div class="memproto">
 206       <table class="memname">
 207         <tr>
 208           <td class="memname"><a class="el" href="cmsis__armclang__a_8h.html#ab904513442afdf77d4f8c74f23cbb040">__STATIC_FORCEINLINE</a> uint32_t __get_CPSR </td>
 209           <td>(</td>
 210           <td class="paramtype">void&#160;</td>
 211           <td class="paramname"></td><td>)</td>
 212           <td></td>
 213         </tr>
 214       </table>
 215 </div><div class="memdoc">
 216
 217 <p>Get CPSR Register. </p>
 218 <dl class="section return"><dt>Returns</dt><dd>CPSR Register value</dd></dl>
 219 <p>This function returns the content of the <a class="el" href="group__CMSIS__CPSR.html">Current Program Status Register (CPSR)</a>. </p>
 220
 221 </div>
 222 </div>
 223 <a id="ga48f0cfea7413b74bd90986762383c1cd" name="ga48f0cfea7413b74bd90986762383c1cd"></a>
 224 <h2 class="memtitle"><span class="permalink"><a href="#ga48f0cfea7413b74bd90986762383c1cd">&#9670;&#160;</a></span>__set_CPSR()</h2>
 225
 226 <div class="memitem">
 227 <div class="memproto">
 228       <table class="memname">
 229         <tr>
 230           <td class="memname"><a class="el" href="cmsis__armclang__a_8h.html#ab904513442afdf77d4f8c74f23cbb040">__STATIC_FORCEINLINE</a> void __set_CPSR </td>
 231           <td>(</td>
 232           <td class="paramtype">uint32_t&#160;</td>
 233           <td class="paramname"><em>cpsr</em></td><td>)</td>
 234           <td></td>
 235         </tr>
 236       </table>
 237 </div><div class="memdoc">
 238
 239 <p>Set CPSR Register. </p>
 240 <dl class="params"><dt>Parameters</dt><dd>
 241   <table class="params">
 242     <tr><td class="paramdir">[in]</td><td class="paramname">cpsr</td><td>CPSR value to set</td></tr>
 243   </table>
 244   </dd>
 245 </dl>
 246 <p>This function assigns the given value to the <a class="el" href="group__CMSIS__CPSR.html">Current Program Status Register (CPSR)</a>. </p>
 247
 248 </div>
 249 </div>
 250 </div><!-- contents -->
 251 </div><!-- doc-content -->
 252 <!-- start footer part -->
 253 <div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
 254   <ul>
 255     <li class="footer">
 256       <script type="text/javascript">
 257         <!--
 258         writeFooter.call(this);
 259         //-->
 260       </script>
 261     </li>
 262   </ul>
 263 </div>
 264 </body>
 265 </html>