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<title>Using as: SH64-Addressing</title>

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<a name="SH64_002dAddressing"></a>
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<p>
Previous: <a href="SH64_002dRegs.html#SH64_002dRegs" accesskey="p" rel="prev">SH64-Regs</a>, Up: <a href="SH64-Syntax.html#SH64-Syntax" accesskey="u" rel="up">SH64 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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<hr>
<a name="Addressing-Modes-4"></a>
<h4 class="subsubsection">9.40.2.3 Addressing Modes</h4>

<a name="index-addressing-modes_002c-SH64"></a>
<a name="index-SH64-addressing-modes"></a>

<p>SH64 operands consist of either a register or immediate value.  The
immediate value can be a constant or label reference (or portion of a
label reference), as in this example:
</p>
<div class="example">
<pre class="example">	movi	4,r2
	pt	function, tr4
	movi	(function &gt;&gt; 16) &amp; 65535,r0
	shori	function &amp; 65535, r0
	ld.l	r0,4,r0
</pre></div>

<a name="index-datalabel_002c-SH64"></a>
<p>Instruction label references can reference labels in either SHmedia or
SHcompact.  To differentiate between the two, labels in SHmedia sections
will always have the least significant bit set (i.e. they will be odd),
which SHcompact labels will have the least significant bit reset
(i.e. they will be even).  If you need to reference the actual address
of a label, you can use the <code>datalabel</code> modifier, as in this
example:
</p>
<div class="example">
<pre class="example">	.long	function
	.long	datalabel function
</pre></div>

<p>In that example, the first longword may or may not have the least
significant bit set depending on whether the label is an SHmedia label
or an SHcompact label.  The second longword will be the actual address
of the label, regardless of what type of label it is.
</p>


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