75 lines
3.5 KiB
HTML
75 lines
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HTML
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This file documents the GNU Assembler "as".
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<a name="Dc"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Dcb.html#Dcb">Dcb</a>,
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Previous: <a rel="previous" accesskey="p" href="Data.html#Data">Data</a>,
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Up: <a rel="up" accesskey="u" href="Pseudo-Ops.html#Pseudo-Ops">Pseudo Ops</a>
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<h3 class="section">7.13 <code>.dc[</code><var>size</var><code>] </code><var>expressions</var></h3>
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<p><a name="index-g_t_0040code_007bdc_007d-directive-310"></a>
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The <code>.dc</code> directive expects zero or more <var>expressions</var> separated by
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commas. These expressions are evaluated and their values inserted into the
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current section. The size of the emitted value depends upon the suffix to the
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<code>.dc</code> directive:
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<dl>
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<dt><code>‘</code><samp><span class="samp">.a</span></samp><code>’</code><dd>Emits N-bit values, where N is the size of an address on the target system.
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<br><dt><code>‘</code><samp><span class="samp">.b</span></samp><code>’</code><dd>Emits 8-bit values.
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<br><dt><code>‘</code><samp><span class="samp">.d</span></samp><code>’</code><dd>Emits double precision floating-point values.
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<br><dt><code>‘</code><samp><span class="samp">.l</span></samp><code>’</code><dd>Emits 32-bit values.
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<br><dt><code>‘</code><samp><span class="samp">.s</span></samp><code>’</code><dd>Emits single precision floating-point values.
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<br><dt><code>‘</code><samp><span class="samp">.w</span></samp><code>’</code><dd>Emits 16-bit values.
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Note - this is true even on targets where the <code>.word</code> directive would emit
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32-bit values.
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<br><dt><code>‘</code><samp><span class="samp">.x</span></samp><code>’</code><dd>Emits long double precision floating-point values.
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</dl>
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<p>If no suffix is used then ‘<samp><span class="samp">.w</span></samp>’ is assumed.
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<p>The byte ordering is target dependent, as is the size and format of floating
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point values.
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