100 lines
5.2 KiB
HTML
100 lines
5.2 KiB
HTML
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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>
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Previous: <a rel="previous" accesskey="p" href="Enum-Target-Types.html#Enum-Target-Types">Enum Target Types</a>,
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Up: <a rel="up" accesskey="u" href="Target-Descriptions.html#Target-Descriptions">Target Descriptions</a>
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<hr>
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</div>
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<h3 class="section">G.5 Standard Target Features</h3>
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<p><a name="index-target-descriptions_002c-standard-features-3657"></a>
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A target description must contain either no registers or all the
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target's registers. If the description contains no registers, then
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<span class="sc">gdb</span> will assume a default register layout, selected based on
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the architecture. If the description contains any registers, the
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default layout will not be used; the standard registers must be
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described in the target description, in such a way that <span class="sc">gdb</span>
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can recognize them.
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<p>This is accomplished by giving specific names to feature elements
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which contain standard registers. <span class="sc">gdb</span> will look for features
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with those names and verify that they contain the expected registers;
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if any known feature is missing required registers, or if any required
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feature is missing, <span class="sc">gdb</span> will reject the target
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description. You can add additional registers to any of the
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standard features — <span class="sc">gdb</span> will display them just as if
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they were added to an unrecognized feature.
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<p>This section lists the known features and their expected contents.
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Sample XML documents for these features are included in the
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<span class="sc">gdb</span> source tree, in the directory <samp><span class="file">gdb/features</span></samp>.
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<p>Names recognized by <span class="sc">gdb</span> should include the name of the
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company or organization which selected the name, and the overall
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architecture to which the feature applies; so e.g. the feature
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containing ARM core registers is named ‘<samp><span class="samp">org.gnu.gdb.arm.core</span></samp>’.
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<p>The names of registers are not case sensitive for the purpose
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of recognizing standard features, but <span class="sc">gdb</span> will only display
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registers using the capitalization used in the description.
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<ul class="menu">
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<li><a accesskey="1" href="AArch64-Features.html#AArch64-Features">AArch64 Features</a>
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<li><a accesskey="2" href="ARC-Features.html#ARC-Features">ARC Features</a>
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<li><a accesskey="3" href="ARM-Features.html#ARM-Features">ARM Features</a>
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<li><a accesskey="4" href="i386-Features.html#i386-Features">i386 Features</a>
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<li><a accesskey="5" href="MicroBlaze-Features.html#MicroBlaze-Features">MicroBlaze Features</a>
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<li><a accesskey="6" href="MIPS-Features.html#MIPS-Features">MIPS Features</a>
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<li><a accesskey="7" href="M68K-Features.html#M68K-Features">M68K Features</a>
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<li><a accesskey="8" href="NDS32-Features.html#NDS32-Features">NDS32 Features</a>
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<li><a accesskey="9" href="Nios-II-Features.html#Nios-II-Features">Nios II Features</a>
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<li><a href="OpenRISC-1000-Features.html#OpenRISC-1000-Features">OpenRISC 1000 Features</a>
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<li><a href="PowerPC-Features.html#PowerPC-Features">PowerPC Features</a>
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<li><a href="RISC_002dV-Features.html#RISC_002dV-Features">RISC-V Features</a>
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<li><a href="S_002f390-and-System-z-Features.html#S_002f390-and-System-z-Features">S/390 and System z Features</a>
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<li><a href="Sparc-Features.html#Sparc-Features">Sparc Features</a>
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<li><a href="TIC6x-Features.html#TIC6x-Features">TIC6x Features</a>
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</ul>
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</body></html>
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