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<title>Debugging with GDB: Architectures In Python</title>
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<a name="Architectures-In-Python"></a>
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<div class="header">
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<p>
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Next: <a href="Registers-In-Python.html#Registers-In-Python" accesskey="n" rel="next">Registers In Python</a>, Previous: <a href="Lazy-Strings-In-Python.html#Lazy-Strings-In-Python" accesskey="p" rel="previous">Lazy Strings In Python</a>, Up: <a href="Python-API.html#Python-API" accesskey="u" rel="up">Python API</a> [<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>
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</div>
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<hr>
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<a name="Python-representation-of-architectures"></a>
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<h4 class="subsubsection">23.2.2.33 Python representation of architectures</h4>
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<a name="index-Python-architectures"></a>
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<p><small>GDB</small> uses architecture specific parameters and artifacts in a
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number of its various computations. An architecture is represented
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by an instance of the <code>gdb.Architecture</code> class.
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</p>
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<p>A <code>gdb.Architecture</code> class has the following methods:
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</p>
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<dl>
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<dt><a name="index-Architecture_002ename"></a>Function: <strong>Architecture.name</strong> <em>()</em></dt>
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<dd><p>Return the name (string value) of the architecture.
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</p></dd></dl>
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<dl>
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<dt><a name="index-Architecture_002edisassemble"></a>Function: <strong>Architecture.disassemble</strong> <em>(<var>start_pc</var> <span class="roman">[</span>, <var>end_pc</var> <span class="roman">[</span>, <var>count</var><span class="roman">]]</span>)</em></dt>
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<dd><p>Return a list of disassembled instructions starting from the memory
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address <var>start_pc</var>. The optional arguments <var>end_pc</var> and
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<var>count</var> determine the number of instructions in the returned list.
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If both the optional arguments <var>end_pc</var> and <var>count</var> are
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specified, then a list of at most <var>count</var> disassembled instructions
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whose start address falls in the closed memory address interval from
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<var>start_pc</var> to <var>end_pc</var> are returned. If <var>end_pc</var> is not
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specified, but <var>count</var> is specified, then <var>count</var> number of
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instructions starting from the address <var>start_pc</var> are returned. If
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<var>count</var> is not specified but <var>end_pc</var> is specified, then all
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instructions whose start address falls in the closed memory address
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interval from <var>start_pc</var> to <var>end_pc</var> are returned. If neither
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<var>end_pc</var> nor <var>count</var> are specified, then a single instruction at
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<var>start_pc</var> is returned. For all of these cases, each element of the
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returned list is a Python <code>dict</code> with the following string keys:
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</p>
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<dl compact="compact">
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<dt><code>addr</code></dt>
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<dd><p>The value corresponding to this key is a Python long integer capturing
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the memory address of the instruction.
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</p>
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</dd>
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<dt><code>asm</code></dt>
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<dd><p>The value corresponding to this key is a string value which represents
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the instruction with assembly language mnemonics. The assembly
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language flavor used is the same as that specified by the current CLI
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variable <code>disassembly-flavor</code>. See <a href="Machine-Code.html#Machine-Code">Machine Code</a>.
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</p>
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</dd>
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<dt><code>length</code></dt>
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<dd><p>The value corresponding to this key is the length (integer value) of the
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instruction in bytes.
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</p>
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</dd>
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</dl>
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</dd></dl>
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<a name="gdbpy_005farchitecture_005fregisters"></a><dl>
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<dt><a name="index-Architecture_002eregisters"></a>Function: <strong>Architecture.registers</strong> <em>(<span class="roman">[</span> <var>reggroup</var> <span class="roman">]</span>)</em></dt>
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<dd><p>Return a <code>gdb.RegisterDescriptorIterator</code> (see <a href="Registers-In-Python.html#Registers-In-Python">Registers In Python</a>) for all of the registers in <var>reggroup</var>, a string that is
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the name of a register group. If <var>reggroup</var> is omitted, or is the
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empty string, then the register group ‘<samp>all</samp>’ is assumed.
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</p></dd></dl>
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<a name="gdbpy_005farchitecture_005freggroups"></a><dl>
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<dt><a name="index-Architecture_002eregister_005fgroups"></a>Function: <strong>Architecture.register_groups</strong> <em>()</em></dt>
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<dd><p>Return a <code>gdb.RegisterGroupsIterator</code> (see <a href="Registers-In-Python.html#Registers-In-Python">Registers In Python</a>) for all of the register groups available for the
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<code>gdb.Architecture</code>.
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</p></dd></dl>
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Next: <a href="Registers-In-Python.html#Registers-In-Python" accesskey="n" rel="next">Registers In Python</a>, Previous: <a href="Lazy-Strings-In-Python.html#Lazy-Strings-In-Python" accesskey="p" rel="previous">Lazy Strings In Python</a>, Up: <a href="Python-API.html#Python-API" accesskey="u" rel="up">Python API</a> [<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>
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