79 lines
3.7 KiB
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79 lines
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<title>Darwin - Debugging with GDB</title>
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<div class="node">
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<a name="Darwin"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="FreeBSD.html#FreeBSD">FreeBSD</a>,
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Previous: <a rel="previous" accesskey="p" href="Hurd-Native.html#Hurd-Native">Hurd Native</a>,
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</div>
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<h4 class="subsection">21.1.6 Darwin</h4>
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<p><a name="index-Darwin-1559"></a>
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<span class="sc">gdb</span> provides the following commands specific to the Darwin target:
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<dl>
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<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
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the Darwin support. Higher values produce more verbose output.
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<br><dt><code>show debug darwin</code><dd><a name="index-show-debug-darwin-1561"></a>Show the current state of Darwin messages.
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<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
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<span class="sc">gdb</span> is reading Darwin object files. (<dfn>Mach-O</dfn> is the
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file format used on Darwin for object and executable files.) Higher
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values produce more verbose output. This is a command to diagnose
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problems internal to <span class="sc">gdb</span> and should not be needed in normal
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usage.
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<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.
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<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
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mapped to a Posix signal. Use this command to turn on trapping of
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Mach exceptions in the inferior. This might be sometimes useful to
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better understand the cause of a fault. The default is off.
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<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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</dl>
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</body></html>
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