72 lines
2.9 KiB
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72 lines
2.9 KiB
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<title>NDS32-Regs - Using as</title>
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="NDS32-Syntax.html#NDS32-Syntax" title="NDS32 Syntax">
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<link rel="prev" href="NDS32_002dChars.html#NDS32_002dChars" title="NDS32-Chars">
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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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section entitled ``GNU Free Documentation License''.
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</head>
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<body>
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<div class="node">
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<a name="NDS32-Regs"></a>
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<a name="NDS32_002dRegs"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="NDS32_002dOps.html#NDS32_002dOps">NDS32-Ops</a>,
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Previous: <a rel="previous" accesskey="p" href="NDS32_002dChars.html#NDS32_002dChars">NDS32-Chars</a>,
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Up: <a rel="up" accesskey="u" href="NDS32-Syntax.html#NDS32-Syntax">NDS32 Syntax</a>
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<hr>
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</div>
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<h5 class="subsubsection">9.30.2.2 Register Names</h5>
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<dl>
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<dt><code>General purpose registers (GPR)</code><dd>There are 32 32-bit general purpose registers $r0 to $r31.
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<br><dt><code>Accumulators d0 and d1</code><dd>64-bit accumulators: $d0.hi, $d0.lo, $d1.hi, and $d1.lo.
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<br><dt><code>Assembler reserved register $ta</code><dd>Register $ta ($r15) is reserved for assembler using.
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<br><dt><code>Operating system reserved registers $p0 and $p1</code><dd>Registers $p0 ($r26) and $p1 ($r27) are used by operating system as scratch
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registers.
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<br><dt><code>Frame pointer $fp</code><dd>Register $r28 is regarded as the frame pointer.
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<br><dt><code>Global pointer</code><dd>Register $r29 is regarded as the global pointer.
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<br><dt><code>Link pointer</code><dd>Register $r30 is regarded as the link pointer.
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<br><dt><code>Stack pointer</code><dd>Register $r31 is regarded as the stack pointer.
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</dl>
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</body></html>
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