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109 lines
3.9 KiB
HTML
109 lines
3.9 KiB
HTML
4 years ago
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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) 1991-2019 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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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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-->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>MSP430-Macros (Using as)</title>
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<meta name="description" content="MSP430-Macros (Using as)">
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<meta name="keywords" content="MSP430-Macros (Using as)">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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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="MSP430-Syntax.html#MSP430-Syntax" rel="up" title="MSP430 Syntax">
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<link href="MSP430_002dChars.html#MSP430_002dChars" rel="next" title="MSP430-Chars">
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<link href="MSP430-Syntax.html#MSP430-Syntax" rel="prev" title="MSP430 Syntax">
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</style>
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</head>
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<body lang="en">
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<a name="MSP430_002dMacros"></a>
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<div class="header">
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<p>
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Next: <a href="MSP430_002dChars.html#MSP430_002dChars" accesskey="n" rel="next">MSP430-Chars</a>, Up: <a href="MSP430-Syntax.html#MSP430-Syntax" accesskey="u" rel="up">MSP430 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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</div>
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<hr>
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<a name="Macros"></a>
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<h4 class="subsubsection">9.28.2.1 Macros</h4>
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<a name="index-Macros_002c-MSP-430"></a>
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<a name="index-MSP-430-macros"></a>
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<p>The macro syntax used on the MSP 430 is like that described in the MSP
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430 Family Assembler Specification. Normal <code>as</code>
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macros should still work.
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</p>
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<p>Additional built-in macros are:
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</p>
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<dl compact="compact">
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<dt><code>llo(exp)</code></dt>
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<dd><p>Extracts least significant word from 32-bit expression ’exp’.
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</p>
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</dd>
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<dt><code>lhi(exp)</code></dt>
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<dd><p>Extracts most significant word from 32-bit expression ’exp’.
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</p>
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</dd>
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<dt><code>hlo(exp)</code></dt>
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<dd><p>Extracts 3rd word from 64-bit expression ’exp’.
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</p>
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</dd>
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<dt><code>hhi(exp)</code></dt>
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<dd><p>Extracts 4rd word from 64-bit expression ’exp’.
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</p>
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</dd>
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</dl>
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<p>They normally being used as an immediate source operand.
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</p><div class="smallexample">
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<pre class="smallexample"> mov #llo(1), r10 ; == mov #1, r10
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mov #lhi(1), r10 ; == mov #0, r10
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</pre></div>
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</body>
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</html>
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