114 lines
4.7 KiB
HTML
114 lines
4.7 KiB
HTML
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Contributed by Cygnus Support. Written by Julia Menapace, Jim Kingdon,
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Permission is granted to copy, distribute and/or modify this document
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<head>
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<title>STABS: Subranges</title>
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<meta name="description" content="STABS: Subranges">
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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="Types.html#Types" rel="up" title="Types">
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<link href="Arrays.html#Arrays" rel="next" title="Arrays">
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="Subranges"></a>
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<div class="header">
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<p>
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Next: <a href="Arrays.html#Arrays" accesskey="n" rel="next">Arrays</a>, Previous: <a href="Cross_002dReferences.html#Cross_002dReferences" accesskey="p" rel="prev">Cross-References</a>, Up: <a href="Types.html#Types" accesskey="u" rel="up">Types</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="Subrange-Types"></a>
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<h3 class="section">5.4 Subrange Types</h3>
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<p>The ‘<samp>r</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>
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<p>Instead of an integer, either bound can be one of the following:
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</p>
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<dl compact="compact">
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<dt><code>A <var>offset</var></code></dt>
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<dd><p>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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</p>
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</dd>
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<dt><code>T <var>offset</var></code></dt>
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<dd><p>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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</p>
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</dd>
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<dt><code>a <var>register-number</var></code></dt>
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<dd><p>The bound is passed by reference in register number
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<var>register-number</var>.
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</p>
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</dd>
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<dt><code>t <var>register-number</var></code></dt>
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<dd><p>The bound is passed by value in register number <var>register-number</var>.
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</p>
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</dd>
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<dt><code>J</code></dt>
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<dd><p>There is no bound.
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</p></dd>
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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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</p>
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</body>
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</html>
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