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 <a name="AVR_002dModifiers"></a>
 <div class="header">
 <p>
 Previous: <a href="AVR_002dRegs.html#AVR_002dRegs" accesskey="p" rel="prev">AVR-Regs</a>, Up: <a href="AVR-Syntax.html#AVR-Syntax" accesskey="u" rel="up">AVR 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>
 </div>
 <hr>
 <a name="Relocatable-Expression-Modifiers"></a>
 <h4 class="subsubsection">9.5.2.3 Relocatable Expression Modifiers</h4>

 <a name="index-AVR-modifiers"></a>
 <a name="index-syntax_002c-AVR"></a>

 <p>The assembler supports several modifiers when using relocatable addresses
 in AVR instruction operands.  The general syntax is the following:
 </p>
 <div class="smallexample">
 <pre class="smallexample">modifier(relocatable-expression)
 </pre></div>

 <dl compact="compact">
 <dd><a name="index-symbol-modifiers"></a>

 </dd>
 <dt><code>lo8</code></dt>
 <dd>
 <p>This modifier allows you to use bits 0 through 7 of
 an address expression as 8 bit relocatable expression.
 </p>
 </dd>
 <dt><code>hi8</code></dt>
 <dd>
 <p>This modifier allows you to use bits 7 through 15 of an address expression
 as 8 bit relocatable expression.  This is useful with, for example, the
 AVR &lsquo;<samp>ldi</samp>&rsquo; instruction and &lsquo;<samp>lo8</samp>&rsquo; modifier.
 </p>
 <p>For example
 </p>
 <div class="smallexample">
 <pre class="smallexample">ldi r26, lo8(sym+10)
 ldi r27, hi8(sym+10)
 </pre></div>

 </dd>
 <dt><code>hh8</code></dt>
 <dd>
 <p>This modifier allows you to use bits 16 through 23 of
 an address expression as 8 bit relocatable expression.
 Also, can be useful for loading 32 bit constants.
 </p>
 </dd>
 <dt><code>hlo8</code></dt>
 <dd>
 <p>Synonym of &lsquo;<samp>hh8</samp>&rsquo;.
 </p>
 </dd>
 <dt><code>hhi8</code></dt>
 <dd>
 <p>This modifier allows you to use bits 24 through 31 of
 an expression as 8 bit expression. This is useful with, for example, the
 AVR &lsquo;<samp>ldi</samp>&rsquo; instruction and &lsquo;<samp>lo8</samp>&rsquo;, &lsquo;<samp>hi8</samp>&rsquo;, &lsquo;<samp>hlo8</samp>&rsquo;,
 &lsquo;<samp>hhi8</samp>&rsquo;, modifier.
 </p>
 <p>For example
 </p>
 <div class="smallexample">
 <pre class="smallexample">ldi r26, lo8(285774925)
 ldi r27, hi8(285774925)
 ldi r28, hlo8(285774925)
 ldi r29, hhi8(285774925)
 ; r29,r28,r27,r26 = 285774925
 </pre></div>

 </dd>
 <dt><code>pm_lo8</code></dt>
 <dd>
 <p>This modifier allows you to use bits 0 through 7 of
 an address expression as 8 bit relocatable expression.
 This modifier useful for addressing data or code from
 Flash/Program memory. The using of &lsquo;<samp>pm_lo8</samp>&rsquo; similar
 to &lsquo;<samp>lo8</samp>&rsquo;.
 </p>
 </dd>
 <dt><code>pm_hi8</code></dt>
 <dd>
 <p>This modifier allows you to use bits 8 through 15 of
 an address expression as 8 bit relocatable expression.
 This modifier useful for addressing data or code from
 Flash/Program memory.
 </p>
 </dd>
 <dt><code>pm_hh8</code></dt>
 <dd>
 <p>This modifier allows you to use bits 15 through 23 of
 an address expression as 8 bit relocatable expression.
 This modifier useful for addressing data or code from
 Flash/Program memory.
 </p>
 </dd>
 </dl>

 <hr>
 <div class="header">
 <p>
 Previous: <a href="AVR_002dRegs.html#AVR_002dRegs" accesskey="p" rel="prev">AVR-Regs</a>, Up: <a href="AVR-Syntax.html#AVR-Syntax" accesskey="u" rel="up">AVR 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="AVR_002dModifiers"></a>
	<div class="header">
	<p>
	Previous: <a href="AVR_002dRegs.html#AVR_002dRegs" accesskey="p" rel="prev">AVR-Regs</a>, Up: <a href="AVR-Syntax.html#AVR-Syntax" accesskey="u" rel="up">AVR Syntax</a>   [<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>
	</div>
	<hr>
	<a name="Relocatable-Expression-Modifiers"></a>
	<h4 class="subsubsection">9.5.2.3 Relocatable Expression Modifiers</h4>

	<a name="index-AVR-modifiers"></a>
	<a name="index-syntax_002c-AVR"></a>

	<p>The assembler supports several modifiers when using relocatable addresses
	in AVR instruction operands. The general syntax is the following:
	</p>
	<div class="smallexample">
	<pre class="smallexample">modifier(relocatable-expression)
	</pre></div>

	<dl compact="compact">
	<dd><a name="index-symbol-modifiers"></a>

	</dd>
	<dt><code>lo8</code></dt>
	<dd>
	<p>This modifier allows you to use bits 0 through 7 of
	an address expression as 8 bit relocatable expression.
	</p>
	</dd>
	<dt><code>hi8</code></dt>
	<dd>
	<p>This modifier allows you to use bits 7 through 15 of an address expression
	as 8 bit relocatable expression. This is useful with, for example, the
	AVR ‘<samp>ldi</samp>’ instruction and ‘<samp>lo8</samp>’ modifier.
	</p>
	<p>For example
	</p>
	<div class="smallexample">
	<pre class="smallexample">ldi r26, lo8(sym+10)
	ldi r27, hi8(sym+10)
	</pre></div>

	</dd>
	<dt><code>hh8</code></dt>
	<dd>
	<p>This modifier allows you to use bits 16 through 23 of
	an address expression as 8 bit relocatable expression.
	Also, can be useful for loading 32 bit constants.
	</p>
	</dd>
	<dt><code>hlo8</code></dt>
	<dd>
	<p>Synonym of ‘<samp>hh8</samp>’.
	</p>
	</dd>
	<dt><code>hhi8</code></dt>
	<dd>
	<p>This modifier allows you to use bits 24 through 31 of
	an expression as 8 bit expression. This is useful with, for example, the
	AVR ‘<samp>ldi</samp>’ instruction and ‘<samp>lo8</samp>’, ‘<samp>hi8</samp>’, ‘<samp>hlo8</samp>’,
	‘<samp>hhi8</samp>’, modifier.
	</p>
	<p>For example
	</p>
	<div class="smallexample">
	<pre class="smallexample">ldi r26, lo8(285774925)
	ldi r27, hi8(285774925)
	ldi r28, hlo8(285774925)
	ldi r29, hhi8(285774925)
	; r29,r28,r27,r26 = 285774925
	</pre></div>

	</dd>
	<dt><code>pm_lo8</code></dt>
	<dd>
	<p>This modifier allows you to use bits 0 through 7 of
	an address expression as 8 bit relocatable expression.
	This modifier useful for addressing data or code from
	Flash/Program memory. The using of ‘<samp>pm_lo8</samp>’ similar
	to ‘<samp>lo8</samp>’.
	</p>
	</dd>
	<dt><code>pm_hi8</code></dt>
	<dd>
	<p>This modifier allows you to use bits 8 through 15 of
	an address expression as 8 bit relocatable expression.
	This modifier useful for addressing data or code from
	Flash/Program memory.
	</p>
	</dd>
	<dt><code>pm_hh8</code></dt>
	<dd>
	<p>This modifier allows you to use bits 15 through 23 of
	an address expression as 8 bit relocatable expression.
	This modifier useful for addressing data or code from
	Flash/Program memory.
	</p>
	</dd>
	</dl>

	<hr>
	<div class="header">
	<p>
	Previous: <a href="AVR_002dRegs.html#AVR_002dRegs" accesskey="p" rel="prev">AVR-Regs</a>, Up: <a href="AVR-Syntax.html#AVR-Syntax" accesskey="u" rel="up">AVR Syntax</a>   [<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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