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<h4 class="subsection">6.58.17 NDS32 Built-in Functions</h4>
<p>These built-in functions are available for the NDS32 target:
<div class="defun">
— Built-in Function: void <b>__builtin_nds32_isync</b> (<var>int *addr</var>)<var><a name="index-g_t_005f_005fbuiltin_005fnds32_005fisync-4101"></a></var><br>
<blockquote><p>Insert an ISYNC instruction into the instruction stream where
<var>addr</var> is an instruction address for serialization.
</p></blockquote></div>
<div class="defun">
— Built-in Function: void <b>__builtin_nds32_isb</b> (<var>void</var>)<var><a name="index-g_t_005f_005fbuiltin_005fnds32_005fisb-4102"></a></var><br>
<blockquote><p>Insert an ISB instruction into the instruction stream.
</p></blockquote></div>
<div class="defun">
— Built-in Function: int <b>__builtin_nds32_mfsr</b> (<var>int sr</var>)<var><a name="index-g_t_005f_005fbuiltin_005fnds32_005fmfsr-4103"></a></var><br>
<blockquote><p>Return the content of a system register which is mapped by <var>sr</var>.
</p></blockquote></div>
<div class="defun">
— Built-in Function: int <b>__builtin_nds32_mfusr</b> (<var>int usr</var>)<var><a name="index-g_t_005f_005fbuiltin_005fnds32_005fmfusr-4104"></a></var><br>
<blockquote><p>Return the content of a user space register which is mapped by <var>usr</var>.
</p></blockquote></div>
<div class="defun">
— Built-in Function: void <b>__builtin_nds32_mtsr</b> (<var>int value, int sr</var>)<var><a name="index-g_t_005f_005fbuiltin_005fnds32_005fmtsr-4105"></a></var><br>
<blockquote><p>Move the <var>value</var> to a system register which is mapped by <var>sr</var>.
</p></blockquote></div>
<div class="defun">
— Built-in Function: void <b>__builtin_nds32_mtusr</b> (<var>int value, int usr</var>)<var><a name="index-g_t_005f_005fbuiltin_005fnds32_005fmtusr-4106"></a></var><br>
<blockquote><p>Move the <var>value</var> to a user space register which is mapped by <var>usr</var>.
</p></blockquote></div>
<div class="defun">
— Built-in Function: void <b>__builtin_nds32_setgie_en</b> (<var>void</var>)<var><a name="index-g_t_005f_005fbuiltin_005fnds32_005fsetgie_005fen-4107"></a></var><br>
<blockquote><p>Enable global interrupt.
</p></blockquote></div>
<div class="defun">
— Built-in Function: void <b>__builtin_nds32_setgie_dis</b> (<var>void</var>)<var><a name="index-g_t_005f_005fbuiltin_005fnds32_005fsetgie_005fdis-4108"></a></var><br>
<blockquote><p>Disable global interrupt.
</p></blockquote></div>
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