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169 lines
7.0 KiB
HTML
169 lines
7.0 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>TIC6X Directives (Using as)</title>
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<meta name="description" content="TIC6X Directives (Using as)">
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<meta name="keywords" content="TIC6X Directives (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="TIC6X_002dDependent.html#TIC6X_002dDependent" rel="up" title="TIC6X-Dependent">
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<link href="TILE_002dGx_002dDependent.html#TILE_002dGx_002dDependent" rel="next" title="TILE-Gx-Dependent">
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<link href="TIC6X-Syntax.html#TIC6X-Syntax" rel="prev" title="TIC6X Syntax">
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<style type="text/css">
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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="TIC6X-Directives"></a>
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<div class="header">
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<p>
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Previous: <a href="TIC6X-Syntax.html#TIC6X-Syntax" accesskey="p" rel="prev">TIC6X Syntax</a>, Up: <a href="TIC6X_002dDependent.html#TIC6X_002dDependent" accesskey="u" rel="up">TIC6X-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="TIC6X-Directives-1"></a>
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<h4 class="subsection">9.45.3 TIC6X Directives</h4>
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<a name="index-machine-directives_002c-TIC6X"></a>
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<a name="index-TIC6X-machine-directives"></a>
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<p>Directives controlling the set of instructions accepted by the
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assembler have effect for instructions between the directive and any
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subsequent directive overriding it.
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</p>
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<dl compact="compact">
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<dd>
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<a name="index-_002earch-directive_002c-TIC6X"></a>
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</dd>
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<dt><code>.arch <var>arch</var></code></dt>
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<dd><p>This has the same effect as <samp>-march=<var>arch</var></samp>.
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</p>
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<a name="index-_002ecantunwind-directive_002c-TIC6X"></a>
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</dd>
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<dt><code>.cantunwind</code></dt>
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<dd><p>Prevents unwinding through the current function. No personality routine
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or exception table data is required or permitted.
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</p>
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<p>If this is not specified then frame unwinding information will be
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constructed from CFI directives. see <a href="CFI-directives.html#CFI-directives">CFI directives</a>.
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</p>
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<a name="index-_002ec6xabi_005fattribute-directive_002c-TIC6X"></a>
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</dd>
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<dt><code>.c6xabi_attribute <var>tag</var>, <var>value</var></code></dt>
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<dd><p>Set the C6000 EABI build attribute <var>tag</var> to <var>value</var>.
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</p>
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<p>The <var>tag</var> is either an attribute number or one of
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<code>Tag_ISA</code>, <code>Tag_ABI_wchar_t</code>,
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<code>Tag_ABI_stack_align_needed</code>,
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<code>Tag_ABI_stack_align_preserved</code>, <code>Tag_ABI_DSBT</code>,
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<code>Tag_ABI_PID</code>, <code>Tag_ABI_PIC</code>,
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<code>TAG_ABI_array_object_alignment</code>,
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<code>TAG_ABI_array_object_align_expected</code>,
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<code>Tag_ABI_compatibility</code> and <code>Tag_ABI_conformance</code>. The
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<var>value</var> is either a <code>number</code>, <code>"string"</code>, or
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<code>number, "string"</code> depending on the tag.
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</p>
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<a name="index-_002eehtype-directive_002c-TIC6X"></a>
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</dd>
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<dt><code>.ehtype <var>symbol</var></code></dt>
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<dd><p>Output an exception type table reference to <var>symbol</var>.
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</p>
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<a name="index-_002eendp-directive_002c-TIC6X"></a>
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</dd>
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<dt><code>.endp</code></dt>
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<dd><p>Marks the end of and exception table or function. If preceded by a
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<code>.handlerdata</code> directive then this also switched back to the previous
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text section.
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</p>
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<a name="index-_002ehandlerdata-directive_002c-TIC6X"></a>
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</dd>
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<dt><code>.handlerdata</code></dt>
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<dd><p>Marks the end of the current function, and the start of the exception table
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entry for that function. Anything between this directive and the
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<code>.endp</code> directive will be added to the exception table entry.
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</p>
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<p>Must be preceded by a CFI block containing a <code>.cfi_lsda</code> directive.
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</p>
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<a name="index-_002enocmp-directive_002c-TIC6X"></a>
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</dd>
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<dt><code>.nocmp</code></dt>
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<dd><p>Disallow use of C64x+ compact instructions in the current text
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section.
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</p>
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<a name="index-_002epersonalityindex-directive_002c-TIC6X"></a>
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</dd>
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<dt><code>.personalityindex <var>index</var></code></dt>
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<dd><p>Sets the personality routine for the current function to the ABI specified
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compact routine number <var>index</var>
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</p>
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<a name="index-_002epersonality-directive_002c-TIC6X"></a>
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</dd>
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<dt><code>.personality <var>name</var></code></dt>
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<dd><p>Sets the personality routine for the current function to <var>name</var>.
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</p>
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<a name="index-_002escomm-directive_002c-TIC6X"></a>
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</dd>
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<dt><code>.scomm <var>symbol</var>, <var>size</var>, <var>align</var></code></dt>
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<dd><p>Like <code>.comm</code>, creating a common symbol <var>symbol</var> with size <var>size</var>
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and alignment <var>align</var>, but unlike when using <code>.comm</code>, this symbol
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will be placed into the small BSS section by the linker.
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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="TIC6X-Syntax.html#TIC6X-Syntax" accesskey="p" rel="prev">TIC6X Syntax</a>, Up: <a href="TIC6X_002dDependent.html#TIC6X_002dDependent" accesskey="u" rel="up">TIC6X-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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</body>
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</html>
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