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<a name="RL78-Function-Attributes"></a>
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<a name="RL78-Function-Attributes-1"></a>
<h4 class="subsection">6.33.28 RL78 Function Attributes</h4>

<p>These function attributes are supported by the RL78 back end:
</p>
<dl compact="compact">
<dt><code>interrupt</code></dt>
<dt><code>brk_interrupt</code></dt>
<dd><a name="index-interrupt-function-attribute_002c-RL78"></a>
<a name="index-brk_005finterrupt-function-attribute_002c-RL78"></a>
<p>These attributes 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 this attribute is present.
</p>
<p>Use <code>brk_interrupt</code> instead of <code>interrupt</code> for
handlers intended to be used with the <code>BRK</code> opcode (i.e. those
that must end with <code>RETB</code> instead of <code>RETI</code>).
</p>
</dd>
<dt><code>naked</code></dt>
<dd><a name="index-naked-function-attribute_002c-RL78"></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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