64 lines
3.0 KiB
HTML
64 lines
3.0 KiB
HTML
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<html lang="en">
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<head>
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<title>MIPS Option Stack - Using as</title>
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<meta name="description" content="Using as">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="MIPS_002dDependent.html#MIPS_002dDependent" title="MIPS-Dependent">
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<link rel="prev" href="MIPS-NaN-Encodings.html#MIPS-NaN-Encodings" title="MIPS NaN Encodings">
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<link rel="next" href="MIPS-ASE-Instruction-Generation-Overrides.html#MIPS-ASE-Instruction-Generation-Overrides" title="MIPS ASE Instruction Generation Overrides">
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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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</head>
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<body>
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<div class="node">
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<a name="MIPS-Option-Stack"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="MIPS-ASE-Instruction-Generation-Overrides.html#MIPS-ASE-Instruction-Generation-Overrides">MIPS ASE Instruction Generation Overrides</a>,
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Previous: <a rel="previous" accesskey="p" href="MIPS-NaN-Encodings.html#MIPS-NaN-Encodings">MIPS NaN Encodings</a>,
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Up: <a rel="up" accesskey="u" href="MIPS_002dDependent.html#MIPS_002dDependent">MIPS-Dependent</a>
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<hr>
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</div>
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<h4 class="subsection">9.27.11 Directives to save and restore options</h4>
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<p><a name="index-MIPS-option-stack-1598"></a><a name="index-g_t_0040code_007b_002eset-push_007d-1599"></a><a name="index-g_t_0040code_007b_002eset-pop_007d-1600"></a>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>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>Traditional MIPS assemblers do not support these directives.
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</body></html>
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