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<a name="C_002dSKY-Function-Attributes"></a>
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Next: <a href="Epiphany-Function-Attributes.html#Epiphany-Function-Attributes" accesskey="n" rel="next">Epiphany Function Attributes</a>, Previous: <a href="CR16-Function-Attributes.html#CR16-Function-Attributes" accesskey="p" rel="prev">CR16 Function Attributes</a>, Up: <a href="Function-Attributes.html#Function-Attributes" accesskey="u" rel="up">Function Attributes</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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<a name="C_002dSKY-Function-Attributes-1"></a>
<h4 class="subsection">6.33.10 C-SKY Function Attributes</h4>

<p>These function attributes are supported by the C-SKY back end:
</p>
<dl compact="compact">
<dt><code>interrupt</code></dt>
<dt><code>isr</code></dt>
<dd><a name="index-interrupt-function-attribute_002c-C_002dSKY"></a>
<a name="index-isr-function-attribute_002c-C_002dSKY"></a>
<p>Use these attributes to indicate that the specified function
is an interrupt handler.
The compiler generates function entry and exit sequences suitable for
use in an interrupt handler when either of these attributes are present.
</p>
<p>Use of these options requires the <samp>-mistack</samp> command-line option
to enable support for the necessary interrupt stack instructions.  They
are ignored with a warning otherwise.  See <a href="C_002dSKY-Options.html#C_002dSKY-Options">C-SKY Options</a>.
</p>
</dd>
<dt><code>naked</code></dt>
<dd><a name="index-naked-function-attribute_002c-C_002dSKY"></a>
<p>This attribute allows the compiler to construct the
requisite function declaration, while allowing the body of the
function to be assembly code. The specified function will not have
prologue/epilogue sequences generated by the compiler. Only basic
<code>asm</code> statements can safely be included in naked functions
(see <a href="Basic-Asm.html#Basic-Asm">Basic Asm</a>). While using extended <code>asm</code> or a mixture of
basic <code>asm</code> and C code may appear to work, they cannot be
depended upon to work reliably and are not supported.
</p></dd>
</dl>


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