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authoralk3pInjection <webmaster@raspii.tech>2024-02-04 16:16:35 +0800
committeralk3pInjection <webmaster@raspii.tech>2024-02-04 16:16:35 +0800
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tree00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/gcc/MicroBlaze-Function-Attributes.html
Import stripped Arm GNU Toolchain 13.2.Rel1HEADumineko
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c
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+<title>Using the GNU Compiler Collection (GCC): MicroBlaze Function Attributes</title>
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+<link href="Function-Attributes.html#Function-Attributes" rel="up" title="Function Attributes">
+<link href="Microsoft-Windows-Function-Attributes.html#Microsoft-Windows-Function-Attributes" rel="next" title="Microsoft Windows Function Attributes">
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+<a name="MicroBlaze-Function-Attributes"></a>
+<div class="header">
+<p>
+Next: <a href="Microsoft-Windows-Function-Attributes.html#Microsoft-Windows-Function-Attributes" accesskey="n" rel="next">Microsoft Windows Function Attributes</a>, Previous: <a href="MCORE-Function-Attributes.html#MCORE-Function-Attributes" accesskey="p" rel="previous">MCORE 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="Indices.html#Indices" title="Index" rel="index">Index</a>]</p>
+</div>
+<hr>
+<a name="MicroBlaze-Function-Attributes-1"></a>
+<h4 class="subsection">6.33.17 MicroBlaze Function Attributes</h4>
+
+<p>These function attributes are supported on MicroBlaze targets:
+</p>
+<dl compact="compact">
+<dd><a name="index-save_005fvolatiles-function-attribute_002c-MicroBlaze"></a>
+</dd>
+<dt><code>save_volatiles</code></dt>
+<dd><p>Use this attribute to indicate that the function is
+an interrupt handler. All volatile registers (in addition to non-volatile
+registers) are saved in the function prologue. If the function is a leaf
+function, only volatiles used by the function are saved. A normal function
+return is generated instead of a return from interrupt.
+</p>
+<a name="index-break_005fhandler-function-attribute_002c-MicroBlaze"></a>
+<a name="index-break-handler-functions"></a>
+</dd>
+<dt><code>break_handler</code></dt>
+<dd><p>Use this attribute to indicate that
+the specified function is a break handler. The compiler generates function
+entry and exit sequences suitable for use in an break handler when this
+attribute is present. The return from <code>break_handler</code> is done through
+the <code>rtbd</code> instead of <code>rtsd</code>.
+</p>
+<div class="smallexample">
+<pre class="smallexample">void f () __attribute__ ((break_handler));
+</pre></div>
+
+<a name="index-interrupt_005fhandler-function-attribute_002c-MicroBlaze"></a>
+<a name="index-fast_005finterrupt-function-attribute_002c-MicroBlaze"></a>
+</dd>
+<dt><code>interrupt_handler</code></dt>
+<dt><code>fast_interrupt</code></dt>
+<dd><p>These attributes indicate that the specified function is an interrupt
+handler. Use the <code>fast_interrupt</code> attribute to indicate handlers
+used in low-latency interrupt mode, and <code>interrupt_handler</code> for
+interrupts that do not use low-latency handlers. In both cases, GCC
+emits appropriate prologue code and generates a return from the handler
+using <code>rtid</code> instead of <code>rtsd</code>.
+</p></dd>
+</dl>
+
+
+
+
+</body>
+</html>
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