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MIPS-autoextend.html 3.8KB

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  62. <a name="Directives-for-extending-MIPS-16-bit-instructions"></a>
  63. <h4 class="subsection">9.27.7 Directives for extending MIPS 16 bit instructions</h4>
  64. <a name="index-_002eset-autoextend"></a>
  65. <a name="index-_002eset-noautoextend"></a>
  66. <p>By default, MIPS 16 instructions are automatically extended to 32 bits
  67. when necessary. The directive <code>.set noautoextend</code> will turn this
  68. off. When <code>.set noautoextend</code> is in effect, any 32 bit instruction
  69. must be explicitly extended with the <code>.e</code> modifier (e.g.,
  70. <code>li.e $4,1000</code>). The directive <code>.set autoextend</code> may be used
  71. to once again automatically extend instructions when necessary.
  72. </p>
  73. <p>This directive is only meaningful when in MIPS 16 mode. Traditional
  74. MIPS assemblers do not support this directive.
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