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.
84 lines
3.7 KiB
HTML
84 lines
3.7 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<title>Syscalls (The Red Hat newlib C Library)</title>
|
|
|
|
<meta name="description" content="Syscalls (The Red Hat newlib C Library)">
|
|
<meta name="keywords" content="Syscalls (The Red Hat newlib C Library)">
|
|
<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="Document-Index.html#Document-Index" rel="index" title="Document Index">
|
|
<link href="Document-Index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
|
<link href="index.html#Top" rel="up" title="Top">
|
|
<link href="Stubs.html#Stubs" rel="next" title="Stubs">
|
|
<link href="Object-Size-Checking.html#Object-Size-Checking" rel="prev" title="Object Size Checking">
|
|
<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="Syscalls"></a>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Arglists.html#Arglists" accesskey="n" rel="next">Arglists</a>, Previous: <a href="Overflow-Protection.html#Overflow-Protection" accesskey="p" rel="prev">Overflow Protection</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
<hr>
|
|
<a name="System-Calls"></a>
|
|
<h2 class="chapter">13 System Calls</h2>
|
|
|
|
<a name="index-linking-the-C-library"></a>
|
|
<p>The C subroutine library depends on a handful of subroutine calls for
|
|
operating system services. If you use the C library on a system that
|
|
complies with the POSIX.1 standard (also known as IEEE 1003.1), most of
|
|
these subroutines are supplied with your operating system.
|
|
</p>
|
|
<p>If some of these subroutines are not provided with your system—in
|
|
the extreme case, if you are developing software for a “bare board”
|
|
system, without an OS—you will at least need to provide do-nothing
|
|
stubs (or subroutines with minimal functionality) to allow your
|
|
programs to link with the subroutines in <code>libc.a</code>.
|
|
</p>
|
|
<table class="menu" border="0" cellspacing="0">
|
|
<tr><td align="left" valign="top">• <a href="Stubs.html#Stubs" accesskey="1">Stubs</a>:</td><td> </td><td align="left" valign="top">Definitions for OS interface
|
|
</td></tr>
|
|
<tr><td align="left" valign="top">• <a href="Reentrant-Syscalls.html#Reentrant-Syscalls" accesskey="2">Reentrant Syscalls</a>:</td><td> </td><td align="left" valign="top">Reentrant covers for OS subroutines
|
|
</td></tr>
|
|
</table>
|
|
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|