165 lines
6.9 KiB
HTML
165 lines
6.9 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2016 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 or
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any later version published by the Free Software Foundation; with the
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Using the GNU Compiler Collection (GCC): Visium Options</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC): Visium Options">
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<meta name="keywords" content="Using the GNU Compiler Collection (GCC): Visium Options">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Submodel-Options.html#Submodel-Options" rel="up" title="Submodel Options">
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<link href="VMS-Options.html#VMS-Options" rel="next" title="VMS Options">
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<link href="VAX-Options.html#VAX-Options" rel="prev" title="VAX Options">
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<style type="text/css">
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<!--
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a.summary-letter {text-decoration: none}
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</head>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="Visium-Options"></a>
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<div class="header">
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<p>
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Next: <a href="VMS-Options.html#VMS-Options" accesskey="n" rel="next">VMS Options</a>, Previous: <a href="VAX-Options.html#VAX-Options" accesskey="p" rel="prev">VAX Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Visium-Options-1"></a>
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<h4 class="subsection">3.18.51 Visium Options</h4>
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<a name="index-Visium-options"></a>
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<dl compact="compact">
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<dt><code>-mdebug</code></dt>
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<dd><a name="index-mdebug-2"></a>
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<p>A program which performs file I/O and is destined to run on an MCM target
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should be linked with this option. It causes the libraries libc.a and
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libdebug.a to be linked. The program should be run on the target under
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the control of the GDB remote debugging stub.
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</p>
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</dd>
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<dt><code>-msim</code></dt>
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<dd><a name="index-msim-10"></a>
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<p>A program which performs file I/O and is destined to run on the simulator
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should be linked with option. This causes libraries libc.a and libsim.a to
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be linked.
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</p>
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</dd>
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<dt><code>-mfpu</code></dt>
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<dt><code>-mhard-float</code></dt>
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<dd><a name="index-mfpu-5"></a>
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<a name="index-mhard_002dfloat-8"></a>
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<p>Generate code containing floating-point instructions. This is the
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default.
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</p>
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</dd>
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<dt><code>-mno-fpu</code></dt>
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<dt><code>-msoft-float</code></dt>
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<dd><a name="index-mno_002dfpu-1"></a>
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<a name="index-msoft_002dfloat-12"></a>
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<p>Generate code containing library calls for floating-point.
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</p>
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<p><samp>-msoft-float</samp> changes the calling convention in the output file;
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therefore, it is only useful if you compile <em>all</em> of a program with
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this option. In particular, you need to compile <samp>libgcc.a</samp>, the
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library that comes with GCC, with <samp>-msoft-float</samp> in order for
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this to work.
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</p>
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</dd>
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<dt><code>-mcpu=<var>cpu_type</var></code></dt>
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<dd><a name="index-mcpu-14"></a>
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<p>Set the instruction set, register set, and instruction scheduling parameters
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for machine type <var>cpu_type</var>. Supported values for <var>cpu_type</var> are
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‘<samp>mcm</samp>’, ‘<samp>gr5</samp>’ and ‘<samp>gr6</samp>’.
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</p>
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<p>‘<samp>mcm</samp>’ is a synonym of ‘<samp>gr5</samp>’ present for backward compatibility.
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</p>
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<p>By default (unless configured otherwise), GCC generates code for the GR5
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variant of the Visium architecture.
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</p>
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<p>With <samp>-mcpu=gr6</samp>, GCC generates code for the GR6 variant of the Visium
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architecture. The only difference from GR5 code is that the compiler will
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generate block move instructions.
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</p>
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</dd>
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<dt><code>-mtune=<var>cpu_type</var></code></dt>
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<dd><a name="index-mtune-13"></a>
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<p>Set the instruction scheduling parameters for machine type <var>cpu_type</var>,
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but do not set the instruction set or register set that the option
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<samp>-mcpu=<var>cpu_type</var></samp> would.
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</p>
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</dd>
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<dt><code>-msv-mode</code></dt>
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<dd><a name="index-msv_002dmode"></a>
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<p>Generate code for the supervisor mode, where there are no restrictions on
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the access to general registers. This is the default.
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</p>
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</dd>
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<dt><code>-muser-mode</code></dt>
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<dd><a name="index-muser_002dmode-1"></a>
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<p>Generate code for the user mode, where the access to some general registers
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is forbidden: on the GR5, registers r24 to r31 cannot be accessed in this
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mode; on the GR6, only registers r29 to r31 are affected.
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</p></dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="VMS-Options.html#VMS-Options" accesskey="n" rel="next">VMS Options</a>, Previous: <a href="VAX-Options.html#VAX-Options" accesskey="p" rel="prev">VAX Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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