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- <title>Standard Target Features (Debugging with GDB)</title>
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- <a name="Standard-Target-Features"></a>
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- <p>
- Previous: <a href="Enum-Target-Types.html#Enum-Target-Types" accesskey="p" rel="prev">Enum Target Types</a>, Up: <a href="Target-Descriptions.html#Target-Descriptions" accesskey="u" rel="up">Target Descriptions</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="Standard-Target-Features-1"></a>
- <h3 class="section">G.5 Standard Target Features</h3>
- <a name="index-target-descriptions_002c-standard-features"></a>
-
- <p>A target description must contain either no registers or all the
- target’s registers. If the description contains no registers, then
- <small>GDB</small> will assume a default register layout, selected based on
- the architecture. If the description contains any registers, the
- default layout will not be used; the standard registers must be
- described in the target description, in such a way that <small>GDB</small>
- can recognize them.
- </p>
- <p>This is accomplished by giving specific names to feature elements
- which contain standard registers. <small>GDB</small> will look for features
- with those names and verify that they contain the expected registers;
- if any known feature is missing required registers, or if any required
- feature is missing, <small>GDB</small> will reject the target
- description. You can add additional registers to any of the
- standard features — <small>GDB</small> will display them just as if
- they were added to an unrecognized feature.
- </p>
- <p>This section lists the known features and their expected contents.
- Sample XML documents for these features are included in the
- <small>GDB</small> source tree, in the directory <samp>gdb/features</samp>.
- </p>
- <p>Names recognized by <small>GDB</small> should include the name of the
- company or organization which selected the name, and the overall
- architecture to which the feature applies; so e.g. the feature
- containing ARM core registers is named ‘<samp>org.gnu.gdb.arm.core</samp>’.
- </p>
- <p>The names of registers are not case sensitive for the purpose
- of recognizing standard features, but <small>GDB</small> will only display
- registers using the capitalization used in the description.
- </p>
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- <tr><td align="left" valign="top">• <a href="Sparc-Features.html#Sparc-Features">Sparc Features</a>:</td><td> </td><td align="left" valign="top">
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- <tr><td align="left" valign="top">• <a href="TIC6x-Features.html#TIC6x-Features">TIC6x Features</a>:</td><td> </td><td align="left" valign="top">
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