84 lines
3.9 KiB
HTML
84 lines
3.9 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) 1992-2017 Free Software Foundation, Inc.
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Contributed by Cygnus Support. Written by Julia Menapace, Jim Kingdon,
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and David MacKenzie.
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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 no
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Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
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Texts. A copy of the license is included in the section entitled "GNU
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Free Documentation License". -->
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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>STABS: Reference Parameters</title>
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<meta name="description" content="STABS: Reference Parameters">
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<meta name="keywords" content="STABS: Reference Parameters">
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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="Symbol-Types-Index.html#Symbol-Types-Index" rel="index" title="Symbol Types Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Parameters.html#Parameters" rel="up" title="Parameters">
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<link href="Conformant-Arrays.html#Conformant-Arrays" rel="next" title="Conformant Arrays">
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<link href="Local-Variable-Parameters.html#Local-Variable-Parameters" rel="prev" title="Local Variable Parameters">
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<style type="text/css">
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a.summary-letter {text-decoration: none}
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kbd {font-style:oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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pre.menu-comment {font-family: serif}
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span.nocodebreak {white-space:nowrap}
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-->
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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="Reference-Parameters"></a>
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<div class="header">
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<p>
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Next: <a href="Conformant-Arrays.html#Conformant-Arrays" accesskey="n" rel="next">Conformant Arrays</a>, Previous: <a href="Local-Variable-Parameters.html#Local-Variable-Parameters" accesskey="p" rel="prev">Local Variable Parameters</a>, Up: <a href="Parameters.html#Parameters" accesskey="u" rel="up">Parameters</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Symbol-Types-Index.html#Symbol-Types-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Passing-Parameters-by-Reference"></a>
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<h4 class="subsection">4.7.3 Passing Parameters by Reference</h4>
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<p>If the parameter is passed by reference (e.g., Pascal <code>VAR</code>
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parameters), then the symbol descriptor is ‘<samp>v</samp>’ if it is in the
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argument list, or ‘<samp>a</samp>’ if it in a register. Other than the fact
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that these contain the address of the parameter rather than the
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parameter itself, they are identical to ‘<samp>p</samp>’ and ‘<samp>R</samp>’,
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respectively. I believe ‘<samp>a</samp>’ is an AIX invention; ‘<samp>v</samp>’ is
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supported by all stabs-using systems as far as I know.
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</p>
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</body>
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</html>
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