78 lines
3.5 KiB
HTML
78 lines
3.5 KiB
HTML
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<html lang="en">
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<head>
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<title>Subranges - 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="Types.html#Types" title="Types">
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<link rel="prev" href="Cross_002dReferences.html#Cross_002dReferences" title="Cross-References">
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<link rel="next" href="Arrays.html#Arrays" title="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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any later version published by the Free Software Foundation; with no
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</head>
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<body>
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<div class="node">
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<a name="Subranges"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Arrays.html#Arrays">Arrays</a>,
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Previous: <a rel="previous" accesskey="p" href="Cross_002dReferences.html#Cross_002dReferences">Cross-References</a>,
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Up: <a rel="up" accesskey="u" href="Types.html#Types">Types</a>
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<hr>
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</div>
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<h3 class="section">5.4 Subrange Types</h3>
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<p>The ‘<samp><span class="samp">r</span></samp>’ type descriptor defines a type as a subrange of another
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type. It is followed by type information for the type of which it is a
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subrange, a semicolon, an integral lower bound, a semicolon, an
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integral upper bound, and a semicolon. The AIX documentation does not
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specify the trailing semicolon, in an effort to specify array indexes
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more cleanly, but a subrange which is not an array index has always
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included a trailing semicolon (see <a href="Arrays.html#Arrays">Arrays</a>).
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<p>Instead of an integer, either bound can be one of the following:
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<dl>
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<dt><code>A </code><var>offset</var><dd>The bound is passed by reference on the stack at offset <var>offset</var>
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from the argument list. See <a href="Parameters.html#Parameters">Parameters</a>, for more information on such
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offsets.
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<br><dt><code>T </code><var>offset</var><dd>The bound is passed by value on the stack at offset <var>offset</var> from
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the argument list.
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<br><dt><code>a </code><var>register-number</var><dd>The bound is passed by reference in register number
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<var>register-number</var>.
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<br><dt><code>t </code><var>register-number</var><dd>The bound is passed by value in register number <var>register-number</var>.
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<br><dt><code>J</code><dd>There is no bound.
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</dl>
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<p>Subranges are also used for builtin types; see <a href="Traditional-Builtin-Types.html#Traditional-Builtin-Types">Traditional Builtin Types</a>.
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</body></html>
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