mips-autoextend.html

来自「gcc手册」· HTML 代码 · 共 33 行

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Node:<a name="MIPS%20autoextend">MIPS autoextend</a>,

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<h4 class="section">Directives for extending MIPS 16 bit instructions</h4>



   <p>By default, MIPS 16 instructions are automatically extended to 32 bits

when necessary.  The directive <code>.set noautoextend</code> will turn this

off.  When <code>.set noautoextend</code> is in effect, any 32 bit instruction

must be explicitly extended with the <code>.e</code> modifier (e.g.,

<code>li.e $4,1000</code>).  The directive <code>.set autoextend</code> may be used

to once again automatically extend instructions when necessary.



   <p>This directive is only meaningful when in MIPS 16 mode.  Traditional

<small>MIPS</small> assemblers do not support this directive.



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