228 lines
9.0 KiB
HTML
228 lines
9.0 KiB
HTML
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
||
|
|
<html>
|
||
|
|
<!-- Copyright (C) 1988-2016 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 the
|
||
|
|
Invariant Sections being "Funding Free Software", the Front-Cover
|
||
|
|
Texts being (a) (see below), and with the Back-Cover Texts being (b)
|
||
|
|
(see below). A copy of the license is included in the section entitled
|
||
|
|
"GNU Free Documentation License".
|
||
|
|
|
||
|
|
(a) The FSF's Front-Cover Text is:
|
||
|
|
|
||
|
|
A GNU Manual
|
||
|
|
|
||
|
|
(b) The FSF's Back-Cover Text is:
|
||
|
|
|
||
|
|
You have freedom to copy and modify this GNU Manual, like GNU
|
||
|
|
software. Copies published by the Free Software Foundation raise
|
||
|
|
funds for GNU development. -->
|
||
|
|
<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
|
||
|
|
<head>
|
||
|
|
<title>Using the GNU Compiler Collection (GCC): M32R/D Options</title>
|
||
|
|
|
||
|
|
<meta name="description" content="Using the GNU Compiler Collection (GCC): M32R/D Options">
|
||
|
|
<meta name="keywords" content="Using the GNU Compiler Collection (GCC): M32R/D Options">
|
||
|
|
<meta name="resource-type" content="document">
|
||
|
|
<meta name="distribution" content="global">
|
||
|
|
<meta name="Generator" content="makeinfo">
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
||
|
|
<link href="index.html#Top" rel="start" title="Top">
|
||
|
|
<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
|
||
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
||
|
|
<link href="Submodel-Options.html#Submodel-Options" rel="up" title="Submodel Options">
|
||
|
|
<link href="M680x0-Options.html#M680x0-Options" rel="next" title="M680x0 Options">
|
||
|
|
<link href="M32C-Options.html#M32C-Options" rel="prev" title="M32C Options">
|
||
|
|
<style type="text/css">
|
||
|
|
<!--
|
||
|
|
a.summary-letter {text-decoration: none}
|
||
|
|
blockquote.smallquotation {font-size: smaller}
|
||
|
|
div.display {margin-left: 3.2em}
|
||
|
|
div.example {margin-left: 3.2em}
|
||
|
|
div.indentedblock {margin-left: 3.2em}
|
||
|
|
div.lisp {margin-left: 3.2em}
|
||
|
|
div.smalldisplay {margin-left: 3.2em}
|
||
|
|
div.smallexample {margin-left: 3.2em}
|
||
|
|
div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
|
||
|
|
div.smalllisp {margin-left: 3.2em}
|
||
|
|
kbd {font-style:oblique}
|
||
|
|
pre.display {font-family: inherit}
|
||
|
|
pre.format {font-family: inherit}
|
||
|
|
pre.menu-comment {font-family: serif}
|
||
|
|
pre.menu-preformatted {font-family: serif}
|
||
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
||
|
|
pre.smallexample {font-size: smaller}
|
||
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
||
|
|
pre.smalllisp {font-size: smaller}
|
||
|
|
span.nocodebreak {white-space:nowrap}
|
||
|
|
span.nolinebreak {white-space:nowrap}
|
||
|
|
span.roman {font-family:serif; font-weight:normal}
|
||
|
|
span.sansserif {font-family:sans-serif; font-weight:normal}
|
||
|
|
ul.no-bullet {list-style: none}
|
||
|
|
-->
|
||
|
|
</style>
|
||
|
|
|
||
|
|
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
|
||
|
|
<a name="M32R_002fD-Options"></a>
|
||
|
|
<div class="header">
|
||
|
|
<p>
|
||
|
|
Next: <a href="M680x0-Options.html#M680x0-Options" accesskey="n" rel="next">M680x0 Options</a>, Previous: <a href="M32C-Options.html#M32C-Options" accesskey="p" rel="prev">M32C 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>
|
||
|
|
</div>
|
||
|
|
<hr>
|
||
|
|
<a name="M32R_002fD-Options-1"></a>
|
||
|
|
<h4 class="subsection">3.18.21 M32R/D Options</h4>
|
||
|
|
<a name="index-M32R_002fD-options"></a>
|
||
|
|
|
||
|
|
<p>These <samp>-m</samp> options are defined for Renesas M32R/D architectures:
|
||
|
|
</p>
|
||
|
|
<dl compact="compact">
|
||
|
|
<dt><code>-m32r2</code></dt>
|
||
|
|
<dd><a name="index-m32r2"></a>
|
||
|
|
<p>Generate code for the M32R/2.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-m32rx</code></dt>
|
||
|
|
<dd><a name="index-m32rx"></a>
|
||
|
|
<p>Generate code for the M32R/X.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-m32r</code></dt>
|
||
|
|
<dd><a name="index-m32r"></a>
|
||
|
|
<p>Generate code for the M32R. This is the default.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-mmodel=small</code></dt>
|
||
|
|
<dd><a name="index-mmodel_003dsmall"></a>
|
||
|
|
<p>Assume all objects live in the lower 16MB of memory (so that their addresses
|
||
|
|
can be loaded with the <code>ld24</code> instruction), and assume all subroutines
|
||
|
|
are reachable with the <code>bl</code> instruction.
|
||
|
|
This is the default.
|
||
|
|
</p>
|
||
|
|
<p>The addressability of a particular object can be set with the
|
||
|
|
<code>model</code> attribute.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-mmodel=medium</code></dt>
|
||
|
|
<dd><a name="index-mmodel_003dmedium"></a>
|
||
|
|
<p>Assume objects may be anywhere in the 32-bit address space (the compiler
|
||
|
|
generates <code>seth/add3</code> instructions to load their addresses), and
|
||
|
|
assume all subroutines are reachable with the <code>bl</code> instruction.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-mmodel=large</code></dt>
|
||
|
|
<dd><a name="index-mmodel_003dlarge"></a>
|
||
|
|
<p>Assume objects may be anywhere in the 32-bit address space (the compiler
|
||
|
|
generates <code>seth/add3</code> instructions to load their addresses), and
|
||
|
|
assume subroutines may not be reachable with the <code>bl</code> instruction
|
||
|
|
(the compiler generates the much slower <code>seth/add3/jl</code>
|
||
|
|
instruction sequence).
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-msdata=none</code></dt>
|
||
|
|
<dd><a name="index-msdata_003dnone-1"></a>
|
||
|
|
<p>Disable use of the small data area. Variables are put into
|
||
|
|
one of <code>.data</code>, <code>.bss</code>, or <code>.rodata</code> (unless the
|
||
|
|
<code>section</code> attribute has been specified).
|
||
|
|
This is the default.
|
||
|
|
</p>
|
||
|
|
<p>The small data area consists of sections <code>.sdata</code> and <code>.sbss</code>.
|
||
|
|
Objects may be explicitly put in the small data area with the
|
||
|
|
<code>section</code> attribute using one of these sections.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-msdata=sdata</code></dt>
|
||
|
|
<dd><a name="index-msdata_003dsdata"></a>
|
||
|
|
<p>Put small global and static data in the small data area, but do not
|
||
|
|
generate special code to reference them.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-msdata=use</code></dt>
|
||
|
|
<dd><a name="index-msdata_003duse"></a>
|
||
|
|
<p>Put small global and static data in the small data area, and generate
|
||
|
|
special instructions to reference them.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-G <var>num</var></code></dt>
|
||
|
|
<dd><a name="index-G"></a>
|
||
|
|
<a name="index-smaller-data-references"></a>
|
||
|
|
<p>Put global and static objects less than or equal to <var>num</var> bytes
|
||
|
|
into the small data or BSS sections instead of the normal data or BSS
|
||
|
|
sections. The default value of <var>num</var> is 8.
|
||
|
|
The <samp>-msdata</samp> option must be set to one of ‘<samp>sdata</samp>’ or ‘<samp>use</samp>’
|
||
|
|
for this option to have any effect.
|
||
|
|
</p>
|
||
|
|
<p>All modules should be compiled with the same <samp>-G <var>num</var></samp> value.
|
||
|
|
Compiling with different values of <var>num</var> may or may not work; if it
|
||
|
|
doesn’t the linker gives an error message—incorrect code is not
|
||
|
|
generated.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-mdebug</code></dt>
|
||
|
|
<dd><a name="index-mdebug"></a>
|
||
|
|
<p>Makes the M32R-specific code in the compiler display some statistics
|
||
|
|
that might help in debugging programs.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-malign-loops</code></dt>
|
||
|
|
<dd><a name="index-malign_002dloops"></a>
|
||
|
|
<p>Align all loops to a 32-byte boundary.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-mno-align-loops</code></dt>
|
||
|
|
<dd><a name="index-mno_002dalign_002dloops"></a>
|
||
|
|
<p>Do not enforce a 32-byte alignment for loops. This is the default.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-missue-rate=<var>number</var></code></dt>
|
||
|
|
<dd><a name="index-missue_002drate_003dnumber"></a>
|
||
|
|
<p>Issue <var>number</var> instructions per cycle. <var>number</var> can only be 1
|
||
|
|
or 2.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-mbranch-cost=<var>number</var></code></dt>
|
||
|
|
<dd><a name="index-mbranch_002dcost_003dnumber"></a>
|
||
|
|
<p><var>number</var> can only be 1 or 2. If it is 1 then branches are
|
||
|
|
preferred over conditional code, if it is 2, then the opposite applies.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-mflush-trap=<var>number</var></code></dt>
|
||
|
|
<dd><a name="index-mflush_002dtrap_003dnumber"></a>
|
||
|
|
<p>Specifies the trap number to use to flush the cache. The default is
|
||
|
|
12. Valid numbers are between 0 and 15 inclusive.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-mno-flush-trap</code></dt>
|
||
|
|
<dd><a name="index-mno_002dflush_002dtrap"></a>
|
||
|
|
<p>Specifies that the cache cannot be flushed by using a trap.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-mflush-func=<var>name</var></code></dt>
|
||
|
|
<dd><a name="index-mflush_002dfunc_003dname"></a>
|
||
|
|
<p>Specifies the name of the operating system function to call to flush
|
||
|
|
the cache. The default is ‘<samp>_flush_cache</samp>’, but a function call
|
||
|
|
is only used if a trap is not available.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>-mno-flush-func</code></dt>
|
||
|
|
<dd><a name="index-mno_002dflush_002dfunc"></a>
|
||
|
|
<p>Indicates that there is no OS function for flushing the cache.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<hr>
|
||
|
|
<div class="header">
|
||
|
|
<p>
|
||
|
|
Next: <a href="M680x0-Options.html#M680x0-Options" accesskey="n" rel="next">M680x0 Options</a>, Previous: <a href="M32C-Options.html#M32C-Options" accesskey="p" rel="prev">M32C 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>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|