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diff --git a/share/doc/gcc/S_002f390-Function-Attributes.html b/share/doc/gcc/S_002f390-Function-Attributes.html new file mode 100644 index 0000000..9b5db60 --- /dev/null +++ b/share/doc/gcc/S_002f390-Function-Attributes.html @@ -0,0 +1,151 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- This file documents the use of the GNU compilers. + +Copyright (C) 1988-2023 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). 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Copies published by the Free Software Foundation raise + funds for GNU development. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Using the GNU Compiler Collection (GCC): S/390 Function Attributes</title> + +<meta name="description" content="Using the GNU Compiler Collection (GCC): S/390 Function Attributes"> +<meta name="keywords" content="Using the GNU Compiler Collection (GCC): S/390 Function Attributes"> +<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="Indices.html#Indices" rel="index" title="Indices"> +<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="SH-Function-Attributes.html#SH-Function-Attributes" rel="next" title="SH Function Attributes"> +<link href="RX-Function-Attributes.html#RX-Function-Attributes" rel="previous" title="RX Function Attributes"> +<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_US" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="S_002f390-Function-Attributes"></a> +<div class="header"> +<p> +Next: <a href="SH-Function-Attributes.html#SH-Function-Attributes" accesskey="n" rel="next">SH Function Attributes</a>, Previous: <a href="RX-Function-Attributes.html#RX-Function-Attributes" accesskey="p" rel="previous">RX 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="Indices.html#Indices" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="S_002f390-Function-Attributes-1"></a> +<h4 class="subsection">6.33.28 S/390 Function Attributes</h4> + +<p>These function attributes are supported on the S/390: +</p> +<dl compact="compact"> +<dd><a name="index-hotpatch-function-attribute_002c-S_002f390"></a> +</dd> +<dt><code>hotpatch (<var>halfwords-before-function-label</var>,<var>halfwords-after-function-label</var>)</code></dt> +<dd> +<p>On S/390 System z targets, you can use this function attribute to +make GCC generate a “hot-patching” function prologue. If the +<samp>-mhotpatch=</samp> command-line option is used at the same time, +the <code>hotpatch</code> attribute takes precedence. The first of the +two arguments specifies the number of halfwords to be added before +the function label. A second argument can be used to specify the +number of halfwords to be added after the function label. For +both arguments the maximum allowed value is 1000000. +</p> +<p>If both arguments are zero, hotpatching is disabled. +</p> +<a name="index-target-function-attribute-4"></a> +</dd> +<dt><code>target (<var>options</var>)</code></dt> +<dd><p>As discussed in <a href="Common-Function-Attributes.html#Common-Function-Attributes">Common Function Attributes</a>, this attribute +allows specification of target-specific compilation options. +</p> +<p>On S/390, the following options are supported: +</p> +<dl compact="compact"> +<dt>‘<samp>arch=</samp>’</dt> +<dt>‘<samp>tune=</samp>’</dt> +<dt>‘<samp>stack-guard=</samp>’</dt> +<dt>‘<samp>stack-size=</samp>’</dt> +<dt>‘<samp>branch-cost=</samp>’</dt> +<dt>‘<samp>warn-framesize=</samp>’</dt> +<dt>‘<samp>backchain</samp>’</dt> +<dt>‘<samp>no-backchain</samp>’</dt> +<dt>‘<samp>hard-dfp</samp>’</dt> +<dt>‘<samp>no-hard-dfp</samp>’</dt> +<dt>‘<samp>hard-float</samp>’</dt> +<dt>‘<samp>soft-float</samp>’</dt> +<dt>‘<samp>htm</samp>’</dt> +<dt>‘<samp>no-htm</samp>’</dt> +<dt>‘<samp>vx</samp>’</dt> +<dt>‘<samp>no-vx</samp>’</dt> +<dt>‘<samp>packed-stack</samp>’</dt> +<dt>‘<samp>no-packed-stack</samp>’</dt> +<dt>‘<samp>small-exec</samp>’</dt> +<dt>‘<samp>no-small-exec</samp>’</dt> +<dt>‘<samp>mvcle</samp>’</dt> +<dt>‘<samp>no-mvcle</samp>’</dt> +<dt>‘<samp>warn-dynamicstack</samp>’</dt> +<dt>‘<samp>no-warn-dynamicstack</samp>’</dt> +</dl> + +<p>The options work exactly like the S/390 specific command line +options (without the prefix <samp>-m</samp>) except that they do not +change any feature macros. For example, +</p> +<div class="smallexample"> +<pre class="smallexample"><code>target("no-vx")</code> +</pre></div> + +<p>does not undefine the <code>__VEC__</code> macro. +</p></dd> +</dl> + + + + +</body> +</html> |