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toolchain-gcc-arm-embedded

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<title>SH-Regs (Using as)</title>

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Next: <a href="SH_002dAddressing.html#SH_002dAddressing" accesskey="n" rel="next">SH-Addressing</a>, Previous: <a href="SH_002dChars.html#SH_002dChars" accesskey="p" rel="prev">SH-Chars</a>, Up: <a href="SH-Syntax.html#SH-Syntax" accesskey="u" rel="up">SH Syntax</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Register-Names-15"></a>
<h4 class="subsubsection">9.43.2.2 Register Names</h4>

<a name="index-SH-registers"></a>
<a name="index-registers_002c-SH"></a>
<p>You can use the predefined symbols &lsquo;<samp>r0</samp>&rsquo;, &lsquo;<samp>r1</samp>&rsquo;, &lsquo;<samp>r2</samp>&rsquo;,
&lsquo;<samp>r3</samp>&rsquo;, &lsquo;<samp>r4</samp>&rsquo;, &lsquo;<samp>r5</samp>&rsquo;, &lsquo;<samp>r6</samp>&rsquo;, &lsquo;<samp>r7</samp>&rsquo;, &lsquo;<samp>r8</samp>&rsquo;,
&lsquo;<samp>r9</samp>&rsquo;, &lsquo;<samp>r10</samp>&rsquo;, &lsquo;<samp>r11</samp>&rsquo;, &lsquo;<samp>r12</samp>&rsquo;, &lsquo;<samp>r13</samp>&rsquo;, &lsquo;<samp>r14</samp>&rsquo;,
and &lsquo;<samp>r15</samp>&rsquo; to refer to the SH registers.
</p>
<p>The SH also has these control registers:
</p>
<dl compact="compact">
<dt><code>pr</code></dt>
<dd><p>procedure register (holds return address)
</p>
</dd>
<dt><code>pc</code></dt>
<dd><p>program counter
</p>
</dd>
<dt><code>mach</code></dt>
<dt><code>macl</code></dt>
<dd><p>high and low multiply accumulator registers
</p>
</dd>
<dt><code>sr</code></dt>
<dd><p>status register
</p>
</dd>
<dt><code>gbr</code></dt>
<dd><p>global base register
</p>
</dd>
<dt><code>vbr</code></dt>
<dd><p>vector base register (for interrupt vectors)
</p></dd>
</dl>


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