85 lines
3.9 KiB
HTML
85 lines
3.9 KiB
HTML
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<title>LM32-Regs - Using as</title>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html">
|
||
|
|
<meta name="description" content="Using as">
|
||
|
|
<meta name="generator" content="makeinfo 4.13">
|
||
|
|
<link title="Top" rel="start" href="index.html#Top">
|
||
|
|
<link rel="up" href="LM32-Syntax.html#LM32-Syntax" title="LM32 Syntax">
|
||
|
|
<link rel="next" href="LM32_002dModifiers.html#LM32_002dModifiers" title="LM32-Modifiers">
|
||
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
||
|
|
<!--
|
||
|
|
This file documents the GNU Assembler "as".
|
||
|
|
|
||
|
|
Copyright (C) 1991-2019 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
Permission is granted to copy, distribute and/or modify this document
|
||
|
|
under the terms of the GNU Free Documentation License, Version 1.3
|
||
|
|
or any later version published by the Free Software Foundation;
|
||
|
|
with no Invariant Sections, with no Front-Cover Texts, and with no
|
||
|
|
Back-Cover Texts. A copy of the license is included in the
|
||
|
|
section entitled ``GNU Free Documentation License''.
|
||
|
|
|
||
|
|
-->
|
||
|
|
<meta http-equiv="Content-Style-Type" content="text/css">
|
||
|
|
<style type="text/css"><!--
|
||
|
|
pre.display { font-family:inherit }
|
||
|
|
pre.format { font-family:inherit }
|
||
|
|
pre.smalldisplay { font-family:inherit; font-size:smaller }
|
||
|
|
pre.smallformat { font-family:inherit; font-size:smaller }
|
||
|
|
pre.smallexample { font-size:smaller }
|
||
|
|
pre.smalllisp { font-size:smaller }
|
||
|
|
span.sc { font-variant:small-caps }
|
||
|
|
span.roman { font-family:serif; font-weight:normal; }
|
||
|
|
span.sansserif { font-family:sans-serif; font-weight:normal; }
|
||
|
|
--></style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<div class="node">
|
||
|
|
<a name="LM32-Regs"></a>
|
||
|
|
<a name="LM32_002dRegs"></a>
|
||
|
|
<p>
|
||
|
|
Next: <a rel="next" accesskey="n" href="LM32_002dModifiers.html#LM32_002dModifiers">LM32-Modifiers</a>,
|
||
|
|
Up: <a rel="up" accesskey="u" href="LM32-Syntax.html#LM32-Syntax">LM32 Syntax</a>
|
||
|
|
<hr>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<h5 class="subsubsection">9.19.2.1 Register Names</h5>
|
||
|
|
|
||
|
|
<p><a name="index-LM32-register-names-1320"></a><a name="index-register-names_002c-LM32-1321"></a>
|
||
|
|
LM32 has 32 x 32-bit general purpose registers ‘<samp><span class="samp">r0</span></samp>’,
|
||
|
|
‘<samp><span class="samp">r1</span></samp>’, ... ‘<samp><span class="samp">r31</span></samp>’.
|
||
|
|
|
||
|
|
<p>The following aliases are defined: ‘<samp><span class="samp">gp</span></samp>’ - ‘<samp><span class="samp">r26</span></samp>’,
|
||
|
|
‘<samp><span class="samp">fp</span></samp>’ - ‘<samp><span class="samp">r27</span></samp>’, ‘<samp><span class="samp">sp</span></samp>’ - ‘<samp><span class="samp">r28</span></samp>’,
|
||
|
|
‘<samp><span class="samp">ra</span></samp>’ - ‘<samp><span class="samp">r29</span></samp>’, ‘<samp><span class="samp">ea</span></samp>’ - ‘<samp><span class="samp">r30</span></samp>’,
|
||
|
|
‘<samp><span class="samp">ba</span></samp>’ - ‘<samp><span class="samp">r31</span></samp>’.
|
||
|
|
|
||
|
|
<p>LM32 has the following Control and Status Registers (CSRs).
|
||
|
|
|
||
|
|
<dl>
|
||
|
|
<dt><code>IE</code><dd>Interrupt enable.
|
||
|
|
<br><dt><code>IM</code><dd>Interrupt mask.
|
||
|
|
<br><dt><code>IP</code><dd>Interrupt pending.
|
||
|
|
<br><dt><code>ICC</code><dd>Instruction cache control.
|
||
|
|
<br><dt><code>DCC</code><dd>Data cache control.
|
||
|
|
<br><dt><code>CC</code><dd>Cycle counter.
|
||
|
|
<br><dt><code>CFG</code><dd>Configuration.
|
||
|
|
<br><dt><code>EBA</code><dd>Exception base address.
|
||
|
|
<br><dt><code>DC</code><dd>Debug control.
|
||
|
|
<br><dt><code>DEBA</code><dd>Debug exception base address.
|
||
|
|
<br><dt><code>JTX</code><dd>JTAG transmit.
|
||
|
|
<br><dt><code>JRX</code><dd>JTAG receive.
|
||
|
|
<br><dt><code>BP0</code><dd>Breakpoint 0.
|
||
|
|
<br><dt><code>BP1</code><dd>Breakpoint 1.
|
||
|
|
<br><dt><code>BP2</code><dd>Breakpoint 2.
|
||
|
|
<br><dt><code>BP3</code><dd>Breakpoint 3.
|
||
|
|
<br><dt><code>WP0</code><dd>Watchpoint 0.
|
||
|
|
<br><dt><code>WP1</code><dd>Watchpoint 1.
|
||
|
|
<br><dt><code>WP2</code><dd>Watchpoint 2.
|
||
|
|
<br><dt><code>WP3</code><dd>Watchpoint 3.
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
</body></html>
|
||
|
|
|