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74 lines
3.5 KiB
HTML
74 lines
3.5 KiB
HTML
4 years ago
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<head>
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<title>SH-Regs - Using as</title>
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<meta http-equiv="Content-Type" content="text/html">
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<meta name="description" content="Using as">
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<meta name="generator" content="makeinfo 4.13">
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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_002dChars.html#SH_002dChars" title="SH-Chars">
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<link rel="next" href="SH_002dAddressing.html#SH_002dAddressing" title="SH-Addressing">
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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) 1991-2015 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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section entitled ``GNU Free Documentation License''.
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<style type="text/css"><!--
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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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<a name="SH-Regs"></a>
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<a name="SH_002dRegs"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="SH_002dAddressing.html#SH_002dAddressing">SH-Addressing</a>,
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Previous: <a rel="previous" accesskey="p" href="SH_002dChars.html#SH_002dChars">SH-Chars</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>
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</div>
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<h5 class="subsubsection">9.40.2.2 Register Names</h5>
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<p><a name="index-SH-registers-1946"></a><a name="index-registers_002c-SH-1947"></a>You can use the predefined symbols ‘<samp><span class="samp">r0</span></samp>’, ‘<samp><span class="samp">r1</span></samp>’, ‘<samp><span class="samp">r2</span></samp>’,
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‘<samp><span class="samp">r3</span></samp>’, ‘<samp><span class="samp">r4</span></samp>’, ‘<samp><span class="samp">r5</span></samp>’, ‘<samp><span class="samp">r6</span></samp>’, ‘<samp><span class="samp">r7</span></samp>’, ‘<samp><span class="samp">r8</span></samp>’,
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‘<samp><span class="samp">r9</span></samp>’, ‘<samp><span class="samp">r10</span></samp>’, ‘<samp><span class="samp">r11</span></samp>’, ‘<samp><span class="samp">r12</span></samp>’, ‘<samp><span class="samp">r13</span></samp>’, ‘<samp><span class="samp">r14</span></samp>’,
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and ‘<samp><span class="samp">r15</span></samp>’ to refer to the SH registers.
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<p>The SH also has these control registers:
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<dl>
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<dt><code>pr</code><dd>procedure register (holds return address)
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<br><dt><code>pc</code><dd>program counter
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<br><dt><code>mach</code><dt><code>macl</code><dd>high and low multiply accumulator registers
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<br><dt><code>sr</code><dd>status register
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<br><dt><code>gbr</code><dd>global base register
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<br><dt><code>vbr</code><dd>vector base register (for interrupt vectors)
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</dl>
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</body></html>
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