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<title>XStormy16 Opcodes - Using as</title>
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This file documents the GNU Assembler "as".
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<a name="XStormy16-Opcodes"></a>
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<p>
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Previous: <a rel="previous" accesskey="p" href="XStormy16-Directives.html#XStormy16-Directives">XStormy16 Directives</a>,
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Up: <a rel="up" accesskey="u" href="XSTORMY16_002dDependent.html#XSTORMY16_002dDependent">XSTORMY16-Dependent</a>
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<h4 class="subsection">9.51.3 XStormy16 Pseudo-Opcodes</h4>
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<p><a name="index-XStormy16-pseudo_002dopcodes-2430"></a><a name="index-pseudo_002dopcodes-for-XStormy16-2431"></a><code>as</code> implements all the standard XStormy16 opcodes.
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<p><code>as</code> also implements the following pseudo ops:
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<a name="index-g_t_0040code_007b_0040_0040lo_007d-pseudo_002dop_002c-XStormy16-2432"></a>
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<dl><dt><code>@lo()</code><dd>Computes the lower 16 bits of the given expression and stores it into
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the immediate operand field of the given instruction. For example:
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<p>‘<samp><span class="samp">add r6, @lo(here - there)</span></samp>’
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<p>computes the difference between the address of labels 'here' and
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'there', takes the lower 16 bits of this difference and adds it to
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register 6.
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<p><a name="index-g_t_0040code_007b_0040_0040hi_007d-pseudo_002dop_002c-XStormy16-2433"></a><br><dt><code>@hi()</code><dd>Computes the higher 16 bits of the given expression and stores it into
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the immediate operand field of the given instruction. For example:
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<p>‘<samp><span class="samp">addc r7, @hi(here - there)</span></samp>’
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<p>computes the difference between the address of labels 'here' and
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'there', takes the upper 16 bits of this difference, shifts it down 16
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bits and then adds it, along with the carry bit, to the value in
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register 7.
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</dl>
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<!-- Copyright (C) 2002-2015 Free Software Foundation, Inc. -->
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