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91 lines
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HTML
91 lines
4.0 KiB
HTML
<!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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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>MIPS Option Stack (Using as)</title>
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<meta name="description" content="MIPS Option Stack (Using as)">
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<meta name="keywords" content="MIPS Option Stack (Using as)">
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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="MIPS_002dDependent.html#MIPS_002dDependent" rel="up" title="MIPS-Dependent">
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<link href="MIPS-ASE-Instruction-Generation-Overrides.html#MIPS-ASE-Instruction-Generation-Overrides" rel="next" title="MIPS ASE Instruction Generation Overrides">
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<link href="MIPS-NaN-Encodings.html#MIPS-NaN-Encodings" rel="prev" title="MIPS NaN Encodings">
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</head>
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<body lang="en">
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<a name="MIPS-Option-Stack"></a>
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<div class="header">
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<p>
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Next: <a href="MIPS-ASE-Instruction-Generation-Overrides.html#MIPS-ASE-Instruction-Generation-Overrides" accesskey="n" rel="next">MIPS ASE Instruction Generation Overrides</a>, Previous: <a href="MIPS-NaN-Encodings.html#MIPS-NaN-Encodings" accesskey="p" rel="prev">MIPS NaN Encodings</a>, Up: <a href="MIPS_002dDependent.html#MIPS_002dDependent" accesskey="u" rel="up">MIPS-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="Directives-to-save-and-restore-options"></a>
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<h4 class="subsection">9.26.11 Directives to save and restore options</h4>
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<a name="index-MIPS-option-stack"></a>
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<a name="index-_002eset-push"></a>
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<a name="index-_002eset-pop"></a>
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<p>The directives <code>.set push</code> and <code>.set pop</code> may be used to save
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and restore the current settings for all the options which are
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controlled by <code>.set</code>. The <code>.set push</code> directive saves the
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current settings on a stack. The <code>.set pop</code> directive pops the
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stack and restores the settings.
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</p>
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<p>These directives can be useful inside an macro which must change an
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option such as the ISA level or instruction reordering but does not want
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to change the state of the code which invoked the macro.
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</p>
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<p>Traditional MIPS assemblers do not support these directives.
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</p>
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</body>
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</html>
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