You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
119 lines
5.3 KiB
HTML
119 lines
5.3 KiB
HTML
4 years ago
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
||
|
|
<html>
|
||
|
|
<!-- Copyright (C) 1988-2018 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 6.4, http://www.gnu.org/software/texinfo/ -->
|
||
|
|
<head>
|
||
|
|
<title>M32R/D Function Attributes (Using the GNU Compiler Collection (GCC))</title>
|
||
|
|
|
||
|
|
<meta name="description" content="M32R/D Function Attributes (Using the GNU Compiler Collection (GCC))">
|
||
|
|
<meta name="keywords" content="M32R/D Function Attributes (Using the GNU Compiler Collection (GCC))">
|
||
|
|
<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="Function-Attributes.html#Function-Attributes" rel="up" title="Function Attributes">
|
||
|
|
<link href="m68k-Function-Attributes.html#m68k-Function-Attributes" rel="next" title="m68k Function Attributes">
|
||
|
|
<link href="M32C-Function-Attributes.html#M32C-Function-Attributes" rel="prev" title="M32C Function Attributes">
|
||
|
|
<style type="text/css">
|
||
|
|
<!--
|
||
|
|
a.summary-letter {text-decoration: none}
|
||
|
|
blockquote.indentedblock {margin-right: 0em}
|
||
|
|
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
|
||
|
|
blockquote.smallquotation {font-size: smaller}
|
||
|
|
div.display {margin-left: 3.2em}
|
||
|
|
div.example {margin-left: 3.2em}
|
||
|
|
div.lisp {margin-left: 3.2em}
|
||
|
|
div.smalldisplay {margin-left: 3.2em}
|
||
|
|
div.smallexample {margin-left: 3.2em}
|
||
|
|
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.nolinebreak {white-space: nowrap}
|
||
|
|
span.roman {font-family: initial; font-weight: normal}
|
||
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
||
|
|
ul.no-bullet {list-style: none}
|
||
|
|
-->
|
||
|
|
</style>
|
||
|
|
|
||
|
|
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body lang="en">
|
||
|
|
<a name="M32R_002fD-Function-Attributes"></a>
|
||
|
|
<div class="header">
|
||
|
|
<p>
|
||
|
|
Next: <a href="m68k-Function-Attributes.html#m68k-Function-Attributes" accesskey="n" rel="next">m68k Function Attributes</a>, Previous: <a href="M32C-Function-Attributes.html#M32C-Function-Attributes" accesskey="p" rel="prev">M32C Function Attributes</a>, Up: <a href="Function-Attributes.html#Function-Attributes" accesskey="u" rel="up">Function Attributes</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-Function-Attributes-1"></a>
|
||
|
|
<h4 class="subsection">6.31.12 M32R/D Function Attributes</h4>
|
||
|
|
|
||
|
|
<p>These function attributes are supported by the M32R/D back end:
|
||
|
|
</p>
|
||
|
|
<dl compact="compact">
|
||
|
|
<dt><code>interrupt</code></dt>
|
||
|
|
<dd><a name="index-interrupt-function-attribute_002c-M32R_002fD"></a>
|
||
|
|
<p>Use this attribute to indicate
|
||
|
|
that the specified function is an interrupt handler. The compiler generates
|
||
|
|
function entry and exit sequences suitable for use in an interrupt handler
|
||
|
|
when this attribute is present.
|
||
|
|
</p>
|
||
|
|
</dd>
|
||
|
|
<dt><code>model (<var>model-name</var>)</code></dt>
|
||
|
|
<dd><a name="index-model-function-attribute_002c-M32R_002fD"></a>
|
||
|
|
<a name="index-function-addressability-on-the-M32R_002fD"></a>
|
||
|
|
|
||
|
|
<p>On the M32R/D, use this attribute to set the addressability of an
|
||
|
|
object, and of the code generated for a function. The identifier
|
||
|
|
<var>model-name</var> is one of <code>small</code>, <code>medium</code>, or
|
||
|
|
<code>large</code>, representing each of the code models.
|
||
|
|
</p>
|
||
|
|
<p>Small model objects live in the lower 16MB of memory (so that their
|
||
|
|
addresses can be loaded with the <code>ld24</code> instruction), and are
|
||
|
|
callable with the <code>bl</code> instruction.
|
||
|
|
</p>
|
||
|
|
<p>Medium model objects may live anywhere in the 32-bit address space (the
|
||
|
|
compiler generates <code>seth/add3</code> instructions to load their addresses),
|
||
|
|
and are callable with the <code>bl</code> instruction.
|
||
|
|
</p>
|
||
|
|
<p>Large model objects may live anywhere in the 32-bit address space (the
|
||
|
|
compiler generates <code>seth/add3</code> instructions to load their addresses),
|
||
|
|
and 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>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|