108 lines
5.6 KiB
HTML
108 lines
5.6 KiB
HTML
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<html lang="en">
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<head>
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<title>CRIS-Pseudos - Using as</title>
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<meta http-equiv="Content-Type" content="text/html">
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<meta name="description" content="Using as">
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<meta name="generator" content="makeinfo 4.13">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="CRIS_002dSyntax.html#CRIS_002dSyntax" title="CRIS-Syntax">
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<link rel="prev" href="CRIS_002dRegs.html#CRIS_002dRegs" title="CRIS-Regs">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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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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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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<style type="text/css"><!--
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--></style>
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</head>
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<body>
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<div class="node">
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<a name="CRIS-Pseudos"></a>
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<a name="CRIS_002dPseudos"></a>
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<p>
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Previous: <a rel="previous" accesskey="p" href="CRIS_002dRegs.html#CRIS_002dRegs">CRIS-Regs</a>,
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Up: <a rel="up" accesskey="u" href="CRIS_002dSyntax.html#CRIS_002dSyntax">CRIS-Syntax</a>
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<hr>
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</div>
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<h5 class="subsubsection">9.9.4.4 Assembler Directives</h5>
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<p><a name="index-assembler-directives_002c-CRIS-916"></a><a name="index-pseudo_002dops_002c-CRIS-917"></a><a name="index-CRIS-assembler-directives-918"></a><a name="index-CRIS-pseudo_002dops-919"></a>
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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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<dl>
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<dt><code>.dword EXPRESSIONS</code><dd><a name="index-assembler-directive-_002edword_002c-CRIS-920"></a><a name="index-pseudo_002dop-_002edword_002c-CRIS-921"></a><a name="index-CRIS-assembler-directive-_002edword-922"></a><a name="index-CRIS-pseudo_002dop-_002edword-923"></a>
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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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<br><dt><code>.syntax ARGUMENT</code><dd><a name="index-assembler-directive-_002esyntax_002c-CRIS-924"></a><a name="index-pseudo_002dop-_002esyntax_002c-CRIS-925"></a><a name="index-CRIS-assembler-directive-_002esyntax-926"></a><a name="index-CRIS-pseudo_002dop-_002esyntax-927"></a>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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<dl>
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<dt><code>no_register_prefix</code><dd>
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The <code>.syntax no_register_prefix</code> <a name="crisnous"></a>directive
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makes a ‘<samp><span class="samp">$</span></samp>’ character prefix on all registers optional. It
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overrides a previous setting, including the corresponding effect
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of the option <samp><span class="option">--no-underscore</span></samp>. If this directive is
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used when ordinary symbols do not have a ‘<samp><span class="samp">_</span></samp>’ character
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prefix, care must be taken to avoid ambiguities whether an
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operand is a register or a symbol; using symbols with names the
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same as general or special registers then invoke undefined
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behavior.
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<br><dt><code>register_prefix</code><dd>
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This directive makes a ‘<samp><span class="samp">$</span></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><span class="option">--underscore</span></samp>.
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<br><dt><code>leading_underscore</code><dd>
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This is an assertion directive, emitting an error if the
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<samp><span class="option">--no-underscore</span></samp> option is in effect.
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<br><dt><code>no_leading_underscore</code><dd>
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This is the opposite of the <code>.syntax leading_underscore</code>
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directive and emits an error if the option <samp><span class="option">--underscore</span></samp>
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is in effect.
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</dl>
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<br><dt><code>.arch ARGUMENT</code><dd><a name="index-assembler-directive-_002earch_002c-CRIS-928"></a><a name="index-pseudo_002dop-_002earch_002c-CRIS-929"></a><a name="index-CRIS-assembler-directive-_002earch-930"></a><a name="index-CRIS-pseudo_002dop-_002earch-931"></a>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><span class="option">--march=</span><var>architecture</var></samp> option
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(see <a href="march_002doption.html#march_002doption">march-option</a>).
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<!-- If you compare with md_pseudo_table, you see that we don't -->
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<!-- document ".file" and ".loc" here. This is because we're just -->
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<!-- wrapping the corresponding ELF function and emitting an error for -->
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<!-- a.out. -->
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</dl>
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<!-- Copyright (C) 2012-2019 Free Software Foundation, Inc. -->
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<!-- This is part of the GAS manual. -->
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<!-- For copying conditions, see the file as.texinfo. -->
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<!-- man end -->
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</body></html>
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