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<a name="Architectures-In-Guile"></a>
<div class="header">
<p>
Next: <a href="Disassembly-In-Guile.html#Disassembly-In-Guile" accesskey="n" rel="next">Disassembly In Guile</a>, Previous: <a href="Lazy-Strings-In-Guile.html#Lazy-Strings-In-Guile" accesskey="p" rel="prev">Lazy Strings In Guile</a>, Up: <a href="Guile-API.html#Guile-API" accesskey="u" rel="up">Guile API</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="Guile-representation-of-architectures"></a>
<h4 class="subsubsection">23.3.3.21 Guile representation of architectures</h4>

<a name="index-guile-architectures"></a>
<a name="index-_003cgdb_003aarch_003e"></a>

<p><small>GDB</small> uses architecture specific parameters and artifacts in a
number of its various computations.  An architecture is represented
by an instance of the <code>&lt;gdb:arch&gt;</code> class.
</p>
<p>The following architecture-related procedures are provided by the
<code>(gdb)</code> module:
</p>
<dl>
<dt><a name="index-arch_003f"></a>Scheme Procedure: <strong>arch?</strong> <em>object</em></dt>
<dd><p>Return <code>#t</code> if <var>object</var> is an object of type <code>&lt;gdb:arch&gt;</code>.
Otherwise return <code>#f</code>.
</p></dd></dl>

<dl>
<dt><a name="index-current_002darch"></a>Scheme Procedure: <strong>current-arch</strong></dt>
<dd><p>Return the current architecture as a <code>&lt;gdb:arch&gt;</code> object.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dname"></a>Scheme Procedure: <strong>arch-name</strong> <em>arch</em></dt>
<dd><p>Return the name (string value) of <code>&lt;gdb:arch&gt;</code> <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dcharset"></a>Scheme Procedure: <strong>arch-charset</strong> <em>arch</em></dt>
<dd><p>Return name of target character set of <code>&lt;gdb:arch&gt;</code> <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dwide_002dcharset"></a>Scheme Procedure: <strong>arch-wide-charset</strong></dt>
<dd><p>Return name of target wide character set of <code>&lt;gdb:arch&gt;</code> <var>arch</var>.
</p></dd></dl>

<p>Each architecture provides a set of predefined types, obtained by
the following functions.
</p>
<dl>
<dt><a name="index-arch_002dvoid_002dtype"></a>Scheme Procedure: <strong>arch-void-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>void</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dchar_002dtype"></a>Scheme Procedure: <strong>arch-char-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>char</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dshort_002dtype"></a>Scheme Procedure: <strong>arch-short-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>short</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dint_002dtype"></a>Scheme Procedure: <strong>arch-int-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for an <code>int</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dlong_002dtype"></a>Scheme Procedure: <strong>arch-long-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>long</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dschar_002dtype"></a>Scheme Procedure: <strong>arch-schar-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>signed char</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002duchar_002dtype"></a>Scheme Procedure: <strong>arch-uchar-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for an <code>unsigned char</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dushort_002dtype"></a>Scheme Procedure: <strong>arch-ushort-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for an <code>unsigned short</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002duint_002dtype"></a>Scheme Procedure: <strong>arch-uint-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for an <code>unsigned int</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dulong_002dtype"></a>Scheme Procedure: <strong>arch-ulong-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for an <code>unsigned long</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dfloat_002dtype"></a>Scheme Procedure: <strong>arch-float-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>float</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002ddouble_002dtype"></a>Scheme Procedure: <strong>arch-double-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>double</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dlongdouble_002dtype"></a>Scheme Procedure: <strong>arch-longdouble-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>long double</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dbool_002dtype"></a>Scheme Procedure: <strong>arch-bool-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>bool</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dlonglong_002dtype"></a>Scheme Procedure: <strong>arch-longlong-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>long long</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dulonglong_002dtype"></a>Scheme Procedure: <strong>arch-ulonglong-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for an <code>unsigned long long</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dint8_002dtype"></a>Scheme Procedure: <strong>arch-int8-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for an <code>int8</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002duint8_002dtype"></a>Scheme Procedure: <strong>arch-uint8-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>uint8</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dint16_002dtype"></a>Scheme Procedure: <strong>arch-int16-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for an <code>int16</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002duint16_002dtype"></a>Scheme Procedure: <strong>arch-uint16-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>uint16</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dint32_002dtype"></a>Scheme Procedure: <strong>arch-int32-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for an <code>int32</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002duint32_002dtype"></a>Scheme Procedure: <strong>arch-uint32-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>uint32</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002dint64_002dtype"></a>Scheme Procedure: <strong>arch-int64-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for an <code>int64</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<dl>
<dt><a name="index-arch_002duint64_002dtype"></a>Scheme Procedure: <strong>arch-uint64-type</strong> <em>arch</em></dt>
<dd><p>Return the <code>&lt;gdb:type&gt;</code> object for a <code>uint64</code> type
of architecture <var>arch</var>.
</p></dd></dl>

<p>Example:
</p>
<div class="smallexample">
<pre class="smallexample">(gdb) guile (type-name (arch-uchar-type (current-arch)))
&quot;unsigned char&quot;
</pre></div>

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