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| <h4 class="subsection">21.1.6 Darwin</h4> |
| |
| <p><a name="index-Darwin-1559"></a> |
| <span class="sc">gdb</span> provides the following commands specific to the Darwin target: |
| |
| <dl> |
| <dt><code>set debug darwin </code><var>num</var><dd><a name="index-set-debug-darwin-1560"></a>When set to a non zero value, enables debugging messages specific to |
| the Darwin support. Higher values produce more verbose output. |
| |
| <br><dt><code>show debug darwin</code><dd><a name="index-show-debug-darwin-1561"></a>Show the current state of Darwin messages. |
| |
| <br><dt><code>set debug mach-o </code><var>num</var><dd><a name="index-set-debug-mach_002do-1562"></a>When set to a non zero value, enables debugging messages while |
| <span class="sc">gdb</span> is reading Darwin object files. (<dfn>Mach-O</dfn> 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 <span class="sc">gdb</span> and should not be needed in normal |
| usage. |
| |
| <br><dt><code>show debug mach-o</code><dd><a name="index-show-debug-mach_002do-1563"></a>Show the current state of Mach-O file messages. |
| |
| <br><dt><code>set mach-exceptions on</code><dt><code>set mach-exceptions off</code><dd><a name="index-set-mach_002dexceptions-1564"></a>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. |
| |
| <br><dt><code>show mach-exceptions</code><dd><a name="index-show-mach_002dexceptions-1565"></a>Show the current state of exceptions trapping. |
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