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78 lines
3.2 KiB
HTML
78 lines
3.2 KiB
HTML
15 years ago
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<title>SH-Addressing - Using as</title>
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<meta name="description" content="Using as">
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<meta name="generator" content="makeinfo 4.7">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="SH-Syntax.html#SH-Syntax" title="SH Syntax">
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<link rel="prev" href="SH_002dRegs.html#SH_002dRegs" title="SH-Regs">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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<!--
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This file documents the GNU Assembler "as".
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Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002,
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2006, 2007 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 1.1
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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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section entitled ``GNU Free Documentation License''.
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--></style>
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</head>
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<body>
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<div class="node">
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<p>
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<a name="SH_002dAddressing"></a>Previous: <a rel="previous" accesskey="p" href="SH_002dRegs.html#SH_002dRegs">SH-Regs</a>,
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Up: <a rel="up" accesskey="u" href="SH-Syntax.html#SH-Syntax">SH Syntax</a>
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<hr><br>
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</div>
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<h5 class="subsubsection">9.28.2.3 Addressing Modes</h5>
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<p><a name="index-addressing-modes_002c-SH-1455"></a><a name="index-SH-addressing-modes-1456"></a><code>as</code> understands the following addressing modes for the SH.
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<code>R</code><var>n</var> in the following refers to any of the numbered
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registers, but <em>not</em> the control registers.
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<dl>
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<dt><code>R</code><var>n</var><dd>Register direct
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<br><dt><code>@R</code><var>n</var><dd>Register indirect
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<br><dt><code>@-R</code><var>n</var><dd>Register indirect with pre-decrement
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<br><dt><code>@R</code><var>n</var><code>+</code><dd>Register indirect with post-increment
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<br><dt><code>@(</code><var>disp</var><code>, R</code><var>n</var><code>)</code><dd>Register indirect with displacement
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<br><dt><code>@(R0, R</code><var>n</var><code>)</code><dd>Register indexed
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<br><dt><code>@(</code><var>disp</var><code>, GBR)</code><dd><code>GBR</code> offset
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<br><dt><code>@(R0, GBR)</code><dd>GBR indexed
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<br><dt><var>addr</var><dt><code>@(</code><var>disp</var><code>, PC)</code><dd>PC relative address (for branch or for addressing memory). The
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<code>as</code> implementation allows you to use the simpler form
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<var>addr</var> anywhere a PC relative address is called for; the alternate
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form is supported for compatibility with other assemblers.
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<br><dt><code>#</code><var>imm</var><dd>Immediate data
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</dl>
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</body></html>
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