116 lines
4.2 KiB
HTML
116 lines
4.2 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This file documents the GNU Assembler "as".
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Copyright (C) 1991-2016 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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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled "GNU Free Documentation License".
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Using as: RL78-Modifiers</title>
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<meta name="description" content="Using as: RL78-Modifiers">
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<meta name="keywords" content="Using as: RL78-Modifiers">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="RL78_002dDependent.html#RL78_002dDependent" rel="up" title="RL78-Dependent">
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<link href="RL78_002dDirectives.html#RL78_002dDirectives" rel="next" title="RL78-Directives">
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<link href="RL78_002dOpts.html#RL78_002dOpts" rel="prev" title="RL78-Opts">
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</style>
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</head>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="RL78_002dModifiers"></a>
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<div class="header">
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<p>
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Next: <a href="RL78_002dDirectives.html#RL78_002dDirectives" accesskey="n" rel="next">RL78-Directives</a>, Previous: <a href="RL78_002dOpts.html#RL78_002dOpts" accesskey="p" rel="prev">RL78-Opts</a>, Up: <a href="RL78_002dDependent.html#RL78_002dDependent" accesskey="u" rel="up">RL78-Dependent</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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</div>
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<hr>
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<a name="Symbolic-Operand-Modifiers-2"></a>
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<h4 class="subsection">9.36.2 Symbolic Operand Modifiers</h4>
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<a name="index-RL78-modifiers"></a>
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<a name="index-syntax_002c-RL78"></a>
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<p>The RL78 has three modifiers that adjust the relocations used by the
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linker:
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</p>
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<dl compact="compact">
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<dt><code>%lo16()</code></dt>
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<dd>
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<p>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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</p>
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<div class="smallexample">
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<pre class="smallexample"> movw ax,#%lo16(_sym)
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</pre></div>
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</dd>
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<dt><code>%hi16()</code></dt>
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<dd>
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<p>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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</p>
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<div class="smallexample">
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<pre class="smallexample"> movw ax,#%hi16(_sym)
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</pre></div>
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</dd>
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<dt><code>%hi8()</code></dt>
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<dd>
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<p>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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</p>
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<div class="smallexample">
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<pre class="smallexample"> mov es, #%hi8(_sym)
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</pre></div>
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</dd>
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</dl>
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</body>
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</html>
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