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159 lines
6.5 KiB
HTML
159 lines
6.5 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>CRIS-Pseudos (Using as)</title>
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<meta name="description" content="CRIS-Pseudos (Using as)">
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<meta name="keywords" content="CRIS-Pseudos (Using as)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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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="CRIS_002dSyntax.html#CRIS_002dSyntax" rel="up" title="CRIS-Syntax">
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<link href="C_002dSKY_002dDependent.html#C_002dSKY_002dDependent" rel="next" title="C-SKY-Dependent">
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<link href="CRIS_002dRegs.html#CRIS_002dRegs" rel="prev" title="CRIS-Regs">
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<style type="text/css">
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a.summary-letter {text-decoration: none}
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pre.format {font-family: inherit}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="CRIS_002dPseudos"></a>
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<div class="header">
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<p>
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Previous: <a href="CRIS_002dRegs.html#CRIS_002dRegs" accesskey="p" rel="prev">CRIS-Regs</a>, Up: <a href="CRIS_002dSyntax.html#CRIS_002dSyntax" accesskey="u" rel="up">CRIS-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="Assembler-Directives-1"></a>
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<h4 class="subsubsection">9.8.4.4 Assembler Directives</h4>
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<a name="index-assembler-directives_002c-CRIS"></a>
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<a name="index-pseudo_002dops_002c-CRIS"></a>
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<a name="index-CRIS-assembler-directives"></a>
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<a name="index-CRIS-pseudo_002dops"></a>
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<p>There are a few CRIS-specific pseudo-directives in addition to
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the generic ones. See <a href="Pseudo-Ops.html#Pseudo-Ops">Pseudo Ops</a>. Constants emitted by
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pseudo-directives are in little-endian order for CRIS. There is
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no support for floating-point-specific directives for CRIS.
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</p>
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<dl compact="compact">
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<dt><code>.dword EXPRESSIONS</code></dt>
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<dd><a name="index-assembler-directive-_002edword_002c-CRIS"></a>
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<a name="index-pseudo_002dop-_002edword_002c-CRIS"></a>
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<a name="index-CRIS-assembler-directive-_002edword"></a>
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<a name="index-CRIS-pseudo_002dop-_002edword"></a>
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<p>The <code>.dword</code> directive is a synonym for <code>.int</code>,
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expecting zero or more EXPRESSIONS, separated by commas. For
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each expression, a 32-bit little-endian constant is emitted.
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</p>
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</dd>
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<dt><code>.syntax ARGUMENT</code></dt>
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<dd><a name="index-assembler-directive-_002esyntax_002c-CRIS"></a>
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<a name="index-pseudo_002dop-_002esyntax_002c-CRIS"></a>
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<a name="index-CRIS-assembler-directive-_002esyntax"></a>
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<a name="index-CRIS-pseudo_002dop-_002esyntax"></a>
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<p>The <code>.syntax</code> directive takes as <var>ARGUMENT</var> one of the
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following case-sensitive choices.
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</p>
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<dl compact="compact">
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<dt><code>no_register_prefix</code></dt>
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<dd>
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<p>The <code>.syntax no_register_prefix</code> <a name="crisnous"></a>directive
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makes a ‘<samp>$</samp>’ character prefix on all registers optional. It
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overrides a previous setting, including the corresponding effect
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of the option <samp>--no-underscore</samp>. If this directive is
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used when ordinary symbols do not have a ‘<samp>_</samp>’ character
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prefix, care must be taken to avoid ambiguities whether an
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operand is a register or a symbol; using symbols with names the
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same as general or special registers then invoke undefined
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behavior.
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</p>
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</dd>
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<dt><code>register_prefix</code></dt>
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<dd>
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<p>This directive makes a ‘<samp>$</samp>’ character prefix on all
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registers mandatory. It overrides a previous setting, including
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the corresponding effect of the option <samp>--underscore</samp>.
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</p>
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</dd>
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<dt><code>leading_underscore</code></dt>
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<dd>
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<p>This is an assertion directive, emitting an error if the
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<samp>--no-underscore</samp> option is in effect.
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</p>
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</dd>
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<dt><code>no_leading_underscore</code></dt>
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<dd>
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<p>This is the opposite of the <code>.syntax leading_underscore</code>
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directive and emits an error if the option <samp>--underscore</samp>
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is in effect.
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</p></dd>
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</dl>
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</dd>
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<dt><code>.arch ARGUMENT</code></dt>
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<dd><a name="index-assembler-directive-_002earch_002c-CRIS"></a>
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<a name="index-pseudo_002dop-_002earch_002c-CRIS"></a>
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<a name="index-CRIS-assembler-directive-_002earch"></a>
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<a name="index-CRIS-pseudo_002dop-_002earch"></a>
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<p>This is an assertion directive, giving an error if the specified
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<var>ARGUMENT</var> is not the same as the specified or default value
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for the <samp>--march=<var>architecture</var></samp> option
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(see <a href="CRIS_002dOpts.html#march_002doption">march-option</a>).
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</p>
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</dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Previous: <a href="CRIS_002dRegs.html#CRIS_002dRegs" accesskey="p" rel="prev">CRIS-Regs</a>, Up: <a href="CRIS_002dSyntax.html#CRIS_002dSyntax" accesskey="u" rel="up">CRIS-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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</body>
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</html>
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