126 lines
5.4 KiB
HTML
126 lines
5.4 KiB
HTML
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<!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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Invariant Sections being "Funding Free Software", the Front-Cover
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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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software. Copies published by the Free Software Foundation raise
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funds for GNU development. -->
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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): Architecture implementation</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC): Architecture implementation">
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<meta name="keywords" content="Using the GNU Compiler Collection (GCC): Architecture implementation">
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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="C-Implementation.html#C-Implementation" rel="up" title="C Implementation">
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<link href="Locale_002dspecific-behavior-implementation.html#Locale_002dspecific-behavior-implementation" rel="next" title="Locale-specific behavior implementation">
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<link href="Library-functions-implementation.html#Library-functions-implementation" rel="prev" title="Library functions implementation">
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<style type="text/css">
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</style>
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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="Architecture-implementation"></a>
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<div class="header">
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<p>
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Next: <a href="Locale_002dspecific-behavior-implementation.html#Locale_002dspecific-behavior-implementation" accesskey="n" rel="next">Locale-specific behavior implementation</a>, Previous: <a href="Library-functions-implementation.html#Library-functions-implementation" accesskey="p" rel="prev">Library functions implementation</a>, Up: <a href="C-Implementation.html#C-Implementation" accesskey="u" rel="up">C Implementation</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="Architecture"></a>
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<h3 class="section">4.15 Architecture</h3>
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<ul>
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<li> <cite>The values or expressions assigned to the macros specified in the
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headers <code><float.h></code>, <code><limits.h></code>, and <code><stdint.h></code>
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(C90, C99 and C11 5.2.4.2, C99 7.18.2, C99 7.18.3, C11 7.20.2, C11 7.20.3).</cite>
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<p>Determined by ABI.
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</p>
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</li><li> <cite>The result of attempting to indirectly access an object with
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automatic or thread storage duration from a thread other than the one
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with which it is associated (C11 6.2.4).</cite>
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<p>Such accesses are supported, subject to the same requirements for
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synchronization for concurrent accesses as for concurrent accesses to
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any object.
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</p>
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</li><li> <cite>The number, order, and encoding of bytes in any object
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(when not explicitly specified in this International Standard) (C99
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and C11 6.2.6.1).</cite>
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<p>Determined by ABI.
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</p>
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</li><li> <cite>Whether any extended alignments are supported and the contexts
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in which they are supported (C11 6.2.8).</cite>
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<p>Extended alignments up to <em>2^{28}</em> (bytes) are supported for
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objects of automatic storage duration. Alignments supported for
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objects of static and thread storage duration are determined by the
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ABI.
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</p>
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</li><li> <cite>Valid alignment values other than those returned by an _Alignof
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expression for fundamental types, if any (C11 6.2.8).</cite>
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<p>Valid alignments are powers of 2 up to and including <em>2^{28}</em>.
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</p>
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</li><li> <cite>The value of the result of the <code>sizeof</code> and <code>_Alignof</code>
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operators (C90 6.3.3.4, C99 and C11 6.5.3.4).</cite>
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<p>Determined by ABI.
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</p>
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</li></ul>
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</body>
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</html>
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