58 lines
2.9 KiB
HTML
58 lines
2.9 KiB
HTML
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<html lang="en">
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<head>
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<title>Reference Parameters - STABS</title>
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<meta name="description" content="STABS">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Parameters.html#Parameters" title="Parameters">
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<link rel="prev" href="Local-Variable-Parameters.html#Local-Variable-Parameters" title="Local Variable Parameters">
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<link rel="next" href="Conformant-Arrays.html#Conformant-Arrays" title="Conformant Arrays">
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Copyright (C) 1992-2019 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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<a name="Reference-Parameters"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Conformant-Arrays.html#Conformant-Arrays">Conformant Arrays</a>,
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Previous: <a rel="previous" accesskey="p" href="Local-Variable-Parameters.html#Local-Variable-Parameters">Local Variable Parameters</a>,
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Up: <a rel="up" accesskey="u" href="Parameters.html#Parameters">Parameters</a>
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<hr>
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</div>
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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><span class="samp">v</span></samp>’ if it is in the
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argument list, or ‘<samp><span class="samp">a</span></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><span class="samp">p</span></samp>’ and ‘<samp><span class="samp">R</span></samp>’,
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respectively. I believe ‘<samp><span class="samp">a</span></samp>’ is an AIX invention; ‘<samp><span class="samp">v</span></samp>’ is
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supported by all stabs-using systems as far as I know.
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</body></html>
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