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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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| Previous: <a href="Lazy-Strings-In-Python.html#Lazy-Strings-In-Python" accesskey="p" rel="prev">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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| <a name="Python-representation-of-architectures"></a> |
| <h4 class="subsubsection">23.2.2.32 Python representation of architectures</h4> |
| <a name="index-Python-architectures"></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>gdb.Architecture</code> class. |
| </p> |
| <p>A <code>gdb.Architecture</code> class has the following methods: |
| </p> |
| <dl> |
| <dt><a name="index-Architecture_002ename"></a>Function: <strong>Architecture.name</strong> <em>()</em></dt> |
| <dd><p>Return the name (string value) of the architecture. |
| </p></dd></dl> |
| |
| <dl> |
| <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> |
| <dd><p>Return a list of disassembled instructions starting from the memory |
| address <var>start_pc</var>. The optional arguments <var>end_pc</var> and |
| <var>count</var> determine the number of instructions in the returned list. |
| If both the optional arguments <var>end_pc</var> and <var>count</var> are |
| specified, then a list of at most <var>count</var> disassembled instructions |
| whose start address falls in the closed memory address interval from |
| <var>start_pc</var> to <var>end_pc</var> are returned. If <var>end_pc</var> is not |
| specified, but <var>count</var> is specified, then <var>count</var> number of |
| instructions starting from the address <var>start_pc</var> are returned. If |
| <var>count</var> is not specified but <var>end_pc</var> is specified, then all |
| instructions whose start address falls in the closed memory address |
| interval from <var>start_pc</var> to <var>end_pc</var> are returned. If neither |
| <var>end_pc</var> nor <var>count</var> are specified, then a single instruction at |
| <var>start_pc</var> is returned. For all of these cases, each element of the |
| returned list is a Python <code>dict</code> with the following string keys: |
| </p> |
| <dl compact="compact"> |
| <dt><code>addr</code></dt> |
| <dd><p>The value corresponding to this key is a Python long integer capturing |
| the memory address of the instruction. |
| </p> |
| </dd> |
| <dt><code>asm</code></dt> |
| <dd><p>The value corresponding to this key is a string value which represents |
| the instruction with assembly language mnemonics. The assembly |
| language flavor used is the same as that specified by the current CLI |
| variable <code>disassembly-flavor</code>. See <a href="Machine-Code.html#Machine-Code">Machine Code</a>. |
| </p> |
| </dd> |
| <dt><code>length</code></dt> |
| <dd><p>The value corresponding to this key is the length (integer value) of the |
| instruction in bytes. |
| </p> |
| </dd> |
| </dl> |
| </dd></dl> |
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