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69 lines
3.0 KiB
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<html lang="en">
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<title>RX-Directives - Using as</title>
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="RX_002dDependent.html#RX_002dDependent" title="RX-Dependent">
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<link rel="prev" href="RX_002dModifiers.html#RX_002dModifiers" title="RX-Modifiers">
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<!--
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This file documents the GNU Assembler "as".
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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</head>
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<body>
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<div class="node">
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<a name="RX-Directives"></a>
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<a name="RX_002dDirectives"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="RX_002dFloat.html#RX_002dFloat">RX-Float</a>,
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Previous: <a rel="previous" accesskey="p" href="RX_002dModifiers.html#RX_002dModifiers">RX-Modifiers</a>,
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Up: <a rel="up" accesskey="u" href="RX_002dDependent.html#RX_002dDependent">RX-Dependent</a>
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<hr>
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</div>
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<h4 class="subsection">9.40.3 Assembler Directives</h4>
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<p><a name="index-assembler-directives_002c-RX-2035"></a><a name="index-RX-assembler-directives-2036"></a>
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The RX version of <code>as</code> has the following specific
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assembler directives:
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<dl>
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<dt><code>.3byte</code><dd><a name="index-assembler-directive-_002e3byte_002c-RX-2037"></a><a name="index-RX-assembler-directive-_002e3byte-2038"></a>Inserts a 3-byte value into the output file at the current location.
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<br><dt><code>.fetchalign</code><dd><a name="index-assembler-directive-_002efetchalign_002c-RX-2039"></a><a name="index-RX-assembler-directive-_002efetchalign-2040"></a>If the next opcode following this directive spans a fetch line
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boundary (8 byte boundary), the opcode is aligned to that boundary.
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If the next opcode does not span a fetch line, this directive has no
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effect. Note that one or more labels may be between this directive
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and the opcode; those labels are aligned as well. Any inserted bytes
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due to alignment will form a NOP opcode.
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</dl>
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</body></html>
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