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| <a name="Darwin-1"></a> |
| <h4 class="subsection">21.1.7 Darwin</h4> |
| <a name="index-Darwin"></a> |
| |
| <p><small>GDB</small> provides the following commands specific to the Darwin target: |
| </p> |
| <dl compact="compact"> |
| <dt><code>set debug darwin <var>num</var></code></dt> |
| <dd><a name="index-set-debug-darwin"></a> |
| <p>When set to a non zero value, enables debugging messages specific to |
| the Darwin support. Higher values produce more verbose output. |
| </p> |
| </dd> |
| <dt><code>show debug darwin</code></dt> |
| <dd><a name="index-show-debug-darwin"></a> |
| <p>Show the current state of Darwin messages. |
| </p> |
| </dd> |
| <dt><code>set debug mach-o <var>num</var></code></dt> |
| <dd><a name="index-set-debug-mach_002do"></a> |
| <p>When set to a non zero value, enables debugging messages while |
| <small>GDB</small> is reading Darwin object files. (<em>Mach-O</em> is the |
| file format used on Darwin for object and executable files.) Higher |
| values produce more verbose output. This is a command to diagnose |
| problems internal to <small>GDB</small> and should not be needed in normal |
| usage. |
| </p> |
| </dd> |
| <dt><code>show debug mach-o</code></dt> |
| <dd><a name="index-show-debug-mach_002do"></a> |
| <p>Show the current state of Mach-O file messages. |
| </p> |
| </dd> |
| <dt><code>set mach-exceptions on</code></dt> |
| <dt><code>set mach-exceptions off</code></dt> |
| <dd><a name="index-set-mach_002dexceptions"></a> |
| <p>On Darwin, faults are first reported as a Mach exception and are then |
| mapped to a Posix signal. Use this command to turn on trapping of |
| Mach exceptions in the inferior. This might be sometimes useful to |
| better understand the cause of a fault. The default is off. |
| </p> |
| </dd> |
| <dt><code>show mach-exceptions</code></dt> |
| <dd><a name="index-show-mach_002dexceptions"></a> |
| <p>Show the current state of exceptions trapping. |
| </p></dd> |
| </dl> |
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