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78 lines
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<title>RL78-Modifiers - Using as</title>
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<!--
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This file documents the GNU Assembler "as".
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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</head>
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<div class="node">
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<a name="RL78-Modifiers"></a>
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<a name="RL78_002dModifiers"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="RL78_002dDirectives.html#RL78_002dDirectives">RL78-Directives</a>,
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Previous: <a rel="previous" accesskey="p" href="RL78_002dOpts.html#RL78_002dOpts">RL78-Opts</a>,
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Up: <a rel="up" accesskey="u" href="RL78_002dDependent.html#RL78_002dDependent">RL78-Dependent</a>
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<hr>
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</div>
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<h4 class="subsection">9.39.2 Symbolic Operand Modifiers</h4>
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<p><a name="index-RL78-modifiers-2005"></a><a name="index-syntax_002c-RL78-2006"></a>
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The RL78 has three modifiers that adjust the relocations used by the
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linker:
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<dl>
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<dt><code>%lo16()</code><dd>
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When loading a 20-bit (or wider) address into registers, this modifier
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selects the 16 least significant bits.
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<pre class="smallexample"> movw ax,#%lo16(_sym)
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</pre>
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<br><dt><code>%hi16()</code><dd>
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When loading a 20-bit (or wider) address into registers, this modifier
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selects the 16 most significant bits.
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<pre class="smallexample"> movw ax,#%hi16(_sym)
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</pre>
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<br><dt><code>%hi8()</code><dd>
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When loading a 20-bit (or wider) address into registers, this modifier
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selects the 8 bits that would go into CS or ES (i.e. bits 23..16).
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<pre class="smallexample"> mov es, #%hi8(_sym)
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</pre>
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</dl>
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</body></html>
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