toolchain/gcc-linaro-6.3.1-2017.02-x8.../share/doc/as.html/Alpha_002dRegs.html

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<title>Using as: Alpha-Regs</title>
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<a name="Register-Names-1"></a>
<h4 class="subsubsection">9.2.3.2 Register Names</h4>
<a name="index-Alpha-registers"></a>
<a name="index-register-names_002c-Alpha"></a>
<p>The 32 integer registers are referred to as &lsquo;<samp>$<var>n</var></samp>&rsquo; or
&lsquo;<samp>$r<var>n</var></samp>&rsquo;. In addition, registers 15, 28, 29, and 30 may
be referred to by the symbols &lsquo;<samp>$fp</samp>&rsquo;, &lsquo;<samp>$at</samp>&rsquo;, &lsquo;<samp>$gp</samp>&rsquo;,
and &lsquo;<samp>$sp</samp>&rsquo; respectively.
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<p>The 32 floating-point registers are referred to as &lsquo;<samp>$f<var>n</var></samp>&rsquo;.
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