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<dd><p class="Body"><a name="84866"> </a>Click the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Variables</font></b> command in the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Debug Windows</font></b> sub-menu to open a window that shows the values of local variables. <a href="c-debugger3.html#87912">Figure&nbsp;8-15</a> shows an example of the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Variables</font></b> window. <div class="frame">
<h4 class="EntityTitle"><a name="87912"><font face="Helvetica, sans-serif" size="-1" class="sans">Figure 8-15:&nbsp;&nbsp;Debugger Variables Window</font></a></h4>

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<dd><p class="Body"><a name="87908"> </a>The contents of the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Variables</font></b> window always reflect the routine that is currently executing; when you step into a different routine, the new routine's local variables replace those in the previous display.</p>
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<h4 class="H4"><i><a name="84946">Registers Window</a></i></h4>
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<div class="CellHeading"><b><a name="84925"> </a><font face="Helvetica, sans-serif" size="-1" class="sans">Shortcut</font></b></div>

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<div class="CellHeading"><b><a name="84927"> </a><font face="Helvetica, sans-serif" size="-1" class="sans">Debug Windows Menu Command</font></b></div>

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<div class="CellBody"><a name="84937"> </a><kbd>ALT+5</kbd></div>

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<div class="CellBody"><a name="84939"> </a><b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Registers</font></b></div>

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<dd><p class="Body"><a name="84948"> </a>Click the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Registers</font></b> command in the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Debug</font></b> menu to open a window that shows the values in the target registers. <a href="c-debugger3.html#88037">Figure&nbsp;8-16</a> illustrates the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Registers</font></b> window. The contents of the window depend on the architecture of the target, and the title displayed when the window is not docked includes information about machine architecture. <div class="frame">
<h4 class="EntityTitle"><a name="88037"><font face="Helvetica, sans-serif" size="-1" class="sans">Figure 8-16:&nbsp;&nbsp;Debugger Registers Window</font></a></h4>

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<div class="CellHeading"><b><a name="91373"> </a><font face="Helvetica, sans-serif" size="-1" class="sans">Shortcut</font></b></div>

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<div class="CellHeading"><b><a name="91375"> </a><font face="Helvetica, sans-serif" size="-1" class="sans">Debug Windows Menu Command</font></b></div>

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<div class="CellBody"><a name="91382"> </a><kbd>ALT+7</kbd></div>

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<div class="CellBody"><a name="91384"> </a><b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Back Trace</font></b></div>

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<dd><p class="Body"><a name="91387"> </a>To inspect the calling sequence leading to the current routine, click <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Back Trace</font></b> in the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Debug Windows</font></b> sub-menu. The <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Back Trace</font></b> window allows you to monitor the stack. You can double-click on any routine in the window to move the context pointer to that stack level in the editor window (<a href="c-debugger3.html#91394">Figure&nbsp;8-17</a>). <div class="frame">
<h4 class="EntityTitle"><a name="91394"><font face="Helvetica, sans-serif" size="-1" class="sans">Figure 8-17:&nbsp;&nbsp;Debugger Back Trace Window</font></a></h4>

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<div class="CellBody"><a name="84980"> </a><kbd>ALT+6</kbd></div>

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<div class="CellBody"><a name="84982"> </a><b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Memory</font></b></div>

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<dd><p class="Body"><a name="84991"> </a>Click the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Memory</font></b> command to open a window that displays a range of target memory starting at the address specified in the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Start Address</font></b> control field. The debugger saves each address you type in the field; you can select a previously displayed address from the drop-down list associated with this box. To update the memory display, press the <img class="figure" border="0" src="images/c-debugger49.gif">
 button. <a href="c-debugger3.html#88087">Figure&nbsp;8-18</a> shows the window docked and maximized. <div class="frame">
<h4 class="EntityTitle"><a name="88087"><font face="Helvetica, sans-serif" size="-1" class="sans">Figure 8-18:&nbsp;&nbsp;Debugger Memory Window</font></a></h4>

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<dd><p class="Body"><a name="88082"> </a>The display of data in the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Memory</font></b> window is controlled by the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Debugger</font></b> page of the <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Options </font></b>property sheet, which is accessible from <b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Tools</font></b>&gt;<b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Options</font></b>&gt;<b class="guiLabel"><font face="Helvetica, sans-serif" size="-1" class="sans">Debugger </font></b>(see <a href="c-customize2.html#87490"><i class="title">9.2.7&nbsp;Debugger</i></a>). </p>
<dd><p class="Body"><a name="93722"> </a>See the description of the <b class="command">x</b> ("examine") command in <i class="title">Debugging with GDB: Examining Data</i> for a discussion of the memory-display formats.</p>
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