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  3. <!-- This file documents the GNU Assembler "as".
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  15. <title>MIPS Option Stack (Using as)</title>
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  59. 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> &nbsp; [<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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  61. <hr>
  62. <a name="Directives-to-save-and-restore-options"></a>
  63. <h4 class="subsection">9.27.11 Directives to save and restore options</h4>
  64. <a name="index-MIPS-option-stack"></a>
  65. <a name="index-_002eset-push"></a>
  66. <a name="index-_002eset-pop"></a>
  67. <p>The directives <code>.set push</code> and <code>.set pop</code> may be used to save
  68. and restore the current settings for all the options which are
  69. controlled by <code>.set</code>. The <code>.set push</code> directive saves the
  70. current settings on a stack. The <code>.set pop</code> directive pops the
  71. stack and restores the settings.
  72. </p>
  73. <p>These directives can be useful inside an macro which must change an
  74. option such as the ISA level or instruction reordering but does not want
  75. to change the state of the code which invoked the macro.
  76. </p>
  77. <p>Traditional MIPS assemblers do not support these directives.
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